diff --git a/v2rayN/ServiceLib/Models/CoreConfigs/SingboxConfig.cs b/v2rayN/ServiceLib/Models/CoreConfigs/SingboxConfig.cs
index a835b15f05e..ccae7472487 100644
--- a/v2rayN/ServiceLib/Models/CoreConfigs/SingboxConfig.cs
+++ b/v2rayN/ServiceLib/Models/CoreConfigs/SingboxConfig.cs
@@ -184,6 +184,7 @@ public class Tls4Sbox
     public string? server_name { get; set; }
     public bool? insecure { get; set; }
     public List<string>? alpn { get; set; }
+    public List<string>? cipher_suites { get; set; }
     public Utls4Sbox? utls { get; set; }
     public Reality4Sbox? reality { get; set; }
     public bool? fragment { get; set; }
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs
index 81027a1f2e5..9be9be49350 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs
@@ -433,6 +433,15 @@ private void FillOutboundTls(Outbound4Sbox outbound)
             }
             if (_node.StreamSecurity == Global.StreamSecurity)
             {
+                if (_node.CipherSuites.IsNotEmpty())
+                {
+                    // Xray stores cipher suites as a colon-separated string; sing-box wants a list of the same Go TLS names
+                    tls.cipher_suites = _node.CipherSuites
+                        .Split([':', ','], StringSplitOptions.RemoveEmptyEntries)
+                        .Select(c => c.Trim())
+                        .Where(c => c.IsNotEmpty())
+                        .ToList();
+                }
                 var certs = CertPemManager.ParsePemChain(_node.Cert);
                 if (certs.Count > 0)
                 {