diff --git a/controller/playground.go b/controller/playground.go
index 501c4e156573..b3f54600547b 100644
--- a/controller/playground.go
+++ b/controller/playground.go
@@ -4,6 +4,7 @@ import (
 	"errors"
 	"fmt"
 
+	"github.com/QuantumNous/new-api/i18n"
 	"github.com/QuantumNous/new-api/middleware"
 	"github.com/QuantumNous/new-api/model"
 	relaycommon "github.com/QuantumNous/new-api/relay/common"
@@ -25,7 +26,7 @@ func Playground(c *gin.Context) {
 
 	useAccessToken := c.GetBool("use_access_token")
 	if useAccessToken {
-		newAPIError = types.NewError(errors.New("暂不支持使用 access token"), types.ErrorCodeAccessDenied, types.ErrOptionWithSkipRetry())
+		newAPIError = types.NewError(errors.New(i18n.T(c, i18n.MsgPlaygroundAccessTokenUnsupported)), types.ErrorCodeAccessDenied, types.ErrOptionWithSkipRetry())
 		return
 	}
 
diff --git a/controller/relay.go b/controller/relay.go
index 5e2db44c25a4..fc4311dde8ba 100644
--- a/controller/relay.go
+++ b/controller/relay.go
@@ -12,6 +12,7 @@ import (
 	"github.com/QuantumNous/new-api/common"
 	"github.com/QuantumNous/new-api/constant"
 	"github.com/QuantumNous/new-api/dto"
+	"github.com/QuantumNous/new-api/i18n"
 	"github.com/QuantumNous/new-api/logger"
 	"github.com/QuantumNous/new-api/middleware"
 	"github.com/QuantumNous/new-api/model"
@@ -308,10 +309,10 @@ func getChannel(c *gin.Context, info *relaycommon.RelayInfo, retryParam *service
 	info.PriceData.GroupRatioInfo = helper.HandleGroupRatio(c, info)
 
 	if err != nil {
-		return nil, types.NewError(fmt.Errorf("获取分组 %s 下模型 %s 的可用渠道失败（retry）: %s", selectGroup, info.OriginModelName, err.Error()), types.ErrorCodeGetChannelFailed, types.ErrOptionWithSkipRetry())
+		return nil, types.NewError(errors.New(i18n.T(c, i18n.MsgChannelGetAvailableRetryFailed, map[string]any{"Group": selectGroup, "Model": info.OriginModelName, "Error": err.Error()})), types.ErrorCodeGetChannelFailed, types.ErrOptionWithSkipRetry())
 	}
 	if channel == nil {
-		return nil, types.NewError(fmt.Errorf("分组 %s 下模型 %s 的可用渠道不存在（retry）", selectGroup, info.OriginModelName), types.ErrorCodeGetChannelFailed, types.ErrOptionWithSkipRetry())
+		return nil, types.NewError(errors.New(i18n.T(c, i18n.MsgChannelNoAvailableRetry, map[string]any{"Group": selectGroup, "Model": info.OriginModelName})), types.ErrorCodeGetChannelFailed, types.ErrOptionWithSkipRetry())
 	}
 
 	newAPIError := middleware.SetupContextForSelectedChannel(c, channel, info.OriginModelName)
@@ -430,7 +431,7 @@ func RelayMidjourney(c *gin.Context) {
 	if mjErr != nil {
 		statusCode := http.StatusBadRequest
 		if mjErr.Code == 30 {
-			mjErr.Result = "当前分组负载已饱和，请稍后再试，或升级账户以提升服务质量。"
+			mjErr.Result = i18n.T(c, i18n.MsgChannelUpstreamSaturatedUpgrade)
 			statusCode = http.StatusTooManyRequests
 		}
 		c.JSON(statusCode, gin.H{
@@ -605,7 +606,7 @@ func RelayTask(c *gin.Context) {
 // respondTaskError 统一输出 Task 错误响应（含 429 限流提示改写）
 func respondTaskError(c *gin.Context, taskErr *dto.TaskError) {
 	if taskErr.StatusCode == http.StatusTooManyRequests {
-		taskErr.Message = "当前分组上游负载已饱和，请稍后再试"
+		taskErr.Message = i18n.T(c, i18n.MsgChannelUpstreamSaturated)
 	}
 	c.JSON(taskErr.StatusCode, taskErr)
 }
diff --git a/i18n/keys.go b/i18n/keys.go
index 6cf5c1bdc333..63c09db67713 100644
--- a/i18n/keys.go
+++ b/i18n/keys.go
@@ -38,6 +38,11 @@ const (
 	MsgAuthUserIdMismatch        = "auth.user_id_mismatch"
 	MsgAuthUserBanned            = "auth.user_banned"
 	MsgAuthInsufficientPrivilege = "auth.insufficient_privilege"
+	MsgAuthClientIpParseFailed   = "auth.client_ip_parse_failed"
+	MsgAuthIpNotAllowed          = "auth.ip_not_allowed"
+	MsgAuthGroupAccessDenied     = "auth.group_access_denied"
+	MsgAuthGroupDeprecated       = "auth.group_deprecated"
+	MsgAuthSpecificChannelDenied = "auth.specific_channel_denied"
 )
 
 // Token related messages
@@ -166,17 +171,30 @@ const (
 
 // Channel related messages
 const (
-	MsgChannelNotExists          = "channel.not_exists"
-	MsgChannelIdFormatError      = "channel.id_format_error"
-	MsgChannelNoAvailableKey     = "channel.no_available_key"
-	MsgChannelGetListFailed      = "channel.get_list_failed"
-	MsgChannelGetTagsFailed      = "channel.get_tags_failed"
-	MsgChannelGetKeyFailed       = "channel.get_key_failed"
-	MsgChannelGetOllamaFailed    = "channel.get_ollama_failed"
-	MsgChannelQueryFailed        = "channel.query_failed"
-	MsgChannelNoValidUpstream    = "channel.no_valid_upstream"
-	MsgChannelUpstreamSaturated  = "channel.upstream_saturated"
-	MsgChannelGetAvailableFailed = "channel.get_available_failed"
+	MsgChannelNotExists                = "channel.not_exists"
+	MsgChannelIdFormatError            = "channel.id_format_error"
+	MsgChannelNoAvailableKey           = "channel.no_available_key"
+	MsgChannelGetListFailed            = "channel.get_list_failed"
+	MsgChannelGetTagsFailed            = "channel.get_tags_failed"
+	MsgChannelGetKeyFailed             = "channel.get_key_failed"
+	MsgChannelGetOllamaFailed          = "channel.get_ollama_failed"
+	MsgChannelQueryFailed              = "channel.query_failed"
+	MsgChannelNoValidUpstream          = "channel.no_valid_upstream"
+	MsgChannelUpstreamSaturated        = "channel.upstream_saturated"
+	MsgChannelUpstreamSaturatedUpgrade = "channel.upstream_saturated_upgrade"
+	MsgChannelGetAvailableFailed       = "channel.get_available_failed"
+	MsgChannelGetAvailableRetryFailed  = "channel.get_available_retry_failed"
+	MsgChannelNoAvailableRetry         = "channel.no_available_retry"
+)
+
+// Playground related messages
+const (
+	MsgPlaygroundAccessTokenUnsupported = "playground.access_token_unsupported"
+)
+
+// Task related messages
+const (
+	MsgTaskFileTooLarge = "task.file_too_large"
 )
 
 // Model related messages
diff --git a/i18n/locales/en.yaml b/i18n/locales/en.yaml
index 198aa27412b8..c01454f6fbe0 100644
--- a/i18n/locales/en.yaml
+++ b/i18n/locales/en.yaml
@@ -32,6 +32,11 @@ auth.user_id_format_error: "Unauthorized, New-Api-User header format error"
 auth.user_id_mismatch: "Unauthorized, New-Api-User does not match logged in user"
 auth.user_banned: "User has been banned"
 auth.insufficient_privilege: "Unauthorized, insufficient privileges"
+auth.client_ip_parse_failed: "Failed to parse client IP address"
+auth.ip_not_allowed: "Your IP is not in this token's allowed IP list"
+auth.group_access_denied: "You do not have permission to access group {{.Group}}"
+auth.group_deprecated: "Group {{.Group}} has been deprecated"
+auth.specific_channel_denied: "Regular users cannot specify a channel"
 
 # Token messages
 token.name_too_long: "Token name is too long"
@@ -154,7 +159,16 @@ channel.get_ollama_failed: "Failed to get Ollama models"
 channel.query_failed: "Failed to query channel"
 channel.no_valid_upstream: "No valid upstream channel"
 channel.upstream_saturated: "Current group upstream load is saturated, please try again later"
+channel.upstream_saturated_upgrade: "Current group upstream load is saturated, please try again later or upgrade your account for better service quality"
 channel.get_available_failed: "Failed to get available channels for model {{.Model}} under group {{.Group}}"
+channel.get_available_retry_failed: "Failed to get available channels for model {{.Model}} under group {{.Group}} (retry): {{.Error}}"
+channel.no_available_retry: "No available channel for model {{.Model}} under group {{.Group}} (retry)"
+
+# Playground messages
+playground.access_token_unsupported: "Access tokens are not supported here"
+
+# Task messages
+task.file_too_large: "File {{.File}} exceeds the size limit. Maximum allowed is {{.MaxMB}} MB"
 
 # Model messages
 model.name_empty: "Model name cannot be empty"
diff --git a/i18n/locales/zh-CN.yaml b/i18n/locales/zh-CN.yaml
index 45a10a584e53..a23fc19d4524 100644
--- a/i18n/locales/zh-CN.yaml
+++ b/i18n/locales/zh-CN.yaml
@@ -33,6 +33,11 @@ auth.user_id_format_error: "无权进行此操作，New-Api-User 格式错误"
 auth.user_id_mismatch: "无权进行此操作，New-Api-User 与登录用户不匹配"
 auth.user_banned: "用户已被封禁"
 auth.insufficient_privilege: "无权进行此操作，权限不足"
+auth.client_ip_parse_failed: "无法解析客户端 IP 地址"
+auth.ip_not_allowed: "您的 IP 不在令牌允许访问的列表中"
+auth.group_access_denied: "无权访问 {{.Group}} 分组"
+auth.group_deprecated: "分组 {{.Group}} 已被弃用"
+auth.specific_channel_denied: "普通用户不支持指定渠道"
 
 # Token messages
 token.name_too_long: "令牌名称过长"
@@ -155,7 +160,16 @@ channel.get_ollama_failed: "获取Ollama模型失败"
 channel.query_failed: "查询渠道失败"
 channel.no_valid_upstream: "无有效上游渠道"
 channel.upstream_saturated: "当前分组上游负载已饱和，请稍后再试"
+channel.upstream_saturated_upgrade: "当前分组负载已饱和，请稍后再试，或升级账户以提升服务质量"
 channel.get_available_failed: "获取分组 {{.Group}} 下模型 {{.Model}} 的可用渠道失败"
+channel.get_available_retry_failed: "获取分组 {{.Group}} 下模型 {{.Model}} 的可用渠道失败（retry）：{{.Error}}"
+channel.no_available_retry: "分组 {{.Group}} 下模型 {{.Model}} 的可用渠道不存在（retry）"
+
+# Playground messages
+playground.access_token_unsupported: "暂不支持使用 access token"
+
+# Task messages
+task.file_too_large: "文件 {{.File}} 大小超过限制，最大允许 {{.MaxMB}} MB"
 
 # Model messages
 model.name_empty: "模型名称不能为空"
diff --git a/i18n/locales/zh-TW.yaml b/i18n/locales/zh-TW.yaml
index ad5a6eae3220..68e387b34014 100644
--- a/i18n/locales/zh-TW.yaml
+++ b/i18n/locales/zh-TW.yaml
@@ -33,6 +33,11 @@ auth.user_id_format_error: "無權進行此操作，New-Api-User 格式錯誤"
 auth.user_id_mismatch: "無權進行此操作，New-Api-User 與登入使用者不匹配"
 auth.user_banned: "使用者已被封禁"
 auth.insufficient_privilege: "無權進行此操作，權限不足"
+auth.client_ip_parse_failed: "無法解析客戶端 IP 位址"
+auth.ip_not_allowed: "您的 IP 不在令牌允許存取的清單中"
+auth.group_access_denied: "無權存取 {{.Group}} 分組"
+auth.group_deprecated: "分組 {{.Group}} 已被棄用"
+auth.specific_channel_denied: "普通使用者不支援指定管道"
 
 # Token messages
 token.name_too_long: "令牌名稱過長"
@@ -155,7 +160,16 @@ channel.get_ollama_failed: "獲取Ollama模型失敗"
 channel.query_failed: "查詢管道失敗"
 channel.no_valid_upstream: "無有效上游管道"
 channel.upstream_saturated: "當前分組上游負載已飽和，請稍後再試"
+channel.upstream_saturated_upgrade: "當前分組負載已飽和，請稍後再試，或升級帳戶以提升服務品質"
 channel.get_available_failed: "獲取分組 {{.Group}} 下模型 {{.Model}} 的可用管道失敗"
+channel.get_available_retry_failed: "獲取分組 {{.Group}} 下模型 {{.Model}} 的可用管道失敗（retry）：{{.Error}}"
+channel.no_available_retry: "分組 {{.Group}} 下模型 {{.Model}} 的可用管道不存在（retry）"
+
+# Playground messages
+playground.access_token_unsupported: "暫不支援使用 access token"
+
+# Task messages
+task.file_too_large: "檔案 {{.File}} 大小超過限制，最大允許 {{.MaxMB}} MB"
 
 # Model messages
 model.name_empty: "模型名稱不能為空"
diff --git a/middleware/auth.go b/middleware/auth.go
index 23d933fbe0c1..c4683b578b19 100644
--- a/middleware/auth.go
+++ b/middleware/auth.go
@@ -354,11 +354,11 @@ func TokenAuth() func(c *gin.Context) {
 			logger.LogDebug(c, "Token has IP restrictions, checking client IP %s", clientIp)
 			ip := net.ParseIP(clientIp)
 			if ip == nil {
-				abortWithOpenAiMessage(c, http.StatusForbidden, "无法解析客户端 IP 地址")
+				abortWithOpenAiMessage(c, http.StatusForbidden, common.TranslateMessage(c, i18n.MsgAuthClientIpParseFailed))
 				return
 			}
 			if common.IsIpInCIDRList(ip, allowIps) == false {
-				abortWithOpenAiMessage(c, http.StatusForbidden, "您的 IP 不在令牌允许访问的列表中", types.ErrorCodeAccessDenied)
+				abortWithOpenAiMessage(c, http.StatusForbidden, common.TranslateMessage(c, i18n.MsgAuthIpNotAllowed), types.ErrorCodeAccessDenied)
 				return
 			}
 			logger.LogDebug(c, "Client IP %s passed the token IP restrictions check", clientIp)
@@ -384,13 +384,13 @@ func TokenAuth() func(c *gin.Context) {
 		if tokenGroup != "" {
 			// check common.UserUsableGroups[userGroup]
 			if _, ok := service.GetUserUsableGroups(userGroup)[tokenGroup]; !ok {
-				abortWithOpenAiMessage(c, http.StatusForbidden, fmt.Sprintf("无权访问 %s 分组", tokenGroup))
+				abortWithOpenAiMessage(c, http.StatusForbidden, common.TranslateMessage(c, i18n.MsgAuthGroupAccessDenied, map[string]any{"Group": tokenGroup}))
 				return
 			}
 			// check group in common.GroupRatio
 			if !ratio_setting.ContainsGroupRatio(tokenGroup) {
 				if tokenGroup != "auto" {
-					abortWithOpenAiMessage(c, http.StatusForbidden, fmt.Sprintf("分组 %s 已被弃用", tokenGroup))
+					abortWithOpenAiMessage(c, http.StatusForbidden, common.TranslateMessage(c, i18n.MsgAuthGroupDeprecated, map[string]any{"Group": tokenGroup}))
 					return
 				}
 			}
@@ -431,8 +431,9 @@ func SetupContextForToken(c *gin.Context, token *model.Token, parts ...string) e
 			c.Set("specific_channel_id", parts[1])
 		} else {
 			c.Header("specific_channel_version", "701e3ae1dc3f7975556d354e0675168d004891c8")
-			abortWithOpenAiMessage(c, http.StatusForbidden, "普通用户不支持指定渠道")
-			return fmt.Errorf("普通用户不支持指定渠道")
+			msg := common.TranslateMessage(c, i18n.MsgAuthSpecificChannelDenied)
+			abortWithOpenAiMessage(c, http.StatusForbidden, msg)
+			return fmt.Errorf("%s", msg)
 		}
 	}
 	return nil
diff --git a/middleware/model-rate-limit.go b/middleware/model-rate-limit.go
index 80a3995df097..b3c91fdb7bd5 100644
--- a/middleware/model-rate-limit.go
+++ b/middleware/model-rate-limit.go
@@ -10,6 +10,7 @@ import (
 	"github.com/QuantumNous/new-api/common"
 	"github.com/QuantumNous/new-api/common/limiter"
 	"github.com/QuantumNous/new-api/constant"
+	"github.com/QuantumNous/new-api/i18n"
 	"github.com/QuantumNous/new-api/setting"
 
 	"github.com/gin-gonic/gin"
@@ -90,7 +91,7 @@ func redisRateLimitHandler(duration int64, totalMaxCount, successMaxCount int) g
 			return
 		}
 		if !allowed {
-			abortWithOpenAiMessage(c, http.StatusTooManyRequests, fmt.Sprintf("您已达到请求数限制：%d分钟内最多请求%d次", setting.ModelRequestRateLimitDurationMinutes, successMaxCount))
+			abortWithOpenAiMessage(c, http.StatusTooManyRequests, i18n.T(c, i18n.MsgRateLimitReached, map[string]any{"Minutes": setting.ModelRequestRateLimitDurationMinutes, "Max": successMaxCount}))
 			return
 		}
 
@@ -114,7 +115,7 @@ func redisRateLimitHandler(duration int64, totalMaxCount, successMaxCount int) g
 			}
 
 			if !allowed {
-				abortWithOpenAiMessage(c, http.StatusTooManyRequests, fmt.Sprintf("您已达到总请求数限制：%d分钟内最多请求%d次，包括失败次数，请检查您的请求是否正确", setting.ModelRequestRateLimitDurationMinutes, totalMaxCount))
+				abortWithOpenAiMessage(c, http.StatusTooManyRequests, i18n.T(c, i18n.MsgRateLimitTotalReached, map[string]any{"Minutes": setting.ModelRequestRateLimitDurationMinutes, "Max": totalMaxCount}))
 			}
 		}
 
diff --git a/relay/channel/task/jimeng/adaptor.go b/relay/channel/task/jimeng/adaptor.go
index e6211b1e4f47..73f68b07c635 100644
--- a/relay/channel/task/jimeng/adaptor.go
+++ b/relay/channel/task/jimeng/adaptor.go
@@ -15,6 +15,7 @@ import (
 	"time"
 
 	"github.com/QuantumNous/new-api/common"
+	"github.com/QuantumNous/new-api/i18n"
 	"github.com/QuantumNous/new-api/model"
 	"github.com/samber/lo"
 
@@ -145,7 +146,7 @@ func (a *TaskAdaptor) BuildRequestBody(c *gin.Context, info *relaycommon.RelayIn
 			for _, fileHeader := range files {
 				// 检查文件大小
 				if fileHeader.Size > MaxFileSize {
-					return nil, fmt.Errorf("文件 %s 大小超过限制，最大允许 %d MB", fileHeader.Filename, MaxFileSize/(1024*1024))
+					return nil, fmt.Errorf("%s", i18n.T(c, i18n.MsgTaskFileTooLarge, map[string]any{"File": fileHeader.Filename, "MaxMB": MaxFileSize / (1024 * 1024)}))
 				}
 
 				file, err := fileHeader.Open()