diff --git a/.changeset/great-masks-mate.md b/.changeset/great-masks-mate.md
new file mode 100644
index 0000000000..68422596f2
--- /dev/null
+++ b/.changeset/great-masks-mate.md
@@ -0,0 +1,5 @@
+---
+"@lynx-js/web-elements": minor
+---
+
+fix: When list-type is not specified, it is treated as single formatting.
diff --git a/packages/web-platform/web-elements/src/XList/x-list.css b/packages/web-platform/web-elements/src/XList/x-list.css
index dd7d93e139..fab0e4241f 100644
--- a/packages/web-platform/web-elements/src/XList/x-list.css
+++ b/packages/web-platform/web-elements/src/XList/x-list.css
@@ -146,7 +146,7 @@ x-list[vertical-orientation="false"]::part(lower-threshold-observer) {
}
/* list-type single */
-x-list[list-type="single"] {
+x-list {
display: flex;
flex-direction: column;
align-items: stretch;
@@ -154,7 +154,7 @@ x-list[list-type="single"] {
column-gap: var(--list-cross-axis-gap);
}
-x-list[list-type="single"][scroll-orientation="horizontal"] {
+x-list[scroll-orientation="horizontal"] {
flex-direction: row;
row-gap: var(--list-cross-axis-gap);
column-gap: var(--list-main-axis-gap);
diff --git a/packages/web-platform/web-tests/tests/web-elements/x-list/basic.html b/packages/web-platform/web-tests/tests/web-elements/x-list/basic.html
index 12ef66e5d2..6e06d4ff34 100644
--- a/packages/web-platform/web-tests/tests/web-elements/x-list/basic.html
+++ b/packages/web-platform/web-tests/tests/web-elements/x-list/basic.html
@@ -44,7 +44,7 @@
-
+
1