diff --git a/kclvm/sema/src/resolver/config.rs b/kclvm/sema/src/resolver/config.rs
index aaa8a3df5..9a2407d09 100644
--- a/kclvm/sema/src/resolver/config.rs
+++ b/kclvm/sema/src/resolver/config.rs
@@ -201,7 +201,7 @@ impl<'ctx> Resolver<'ctx> {
     /// Pop method for the 'config_expr_context' stack
     ///
     /// Returns:
-    ///     the item poped from stack.
+    ///     the item popped from stack.
     #[inline]
     pub(crate) fn restore_config_expr_context(&mut self) -> Option<ScopeObject> {
         match self.ctx.config_expr_context.pop() {
@@ -258,9 +258,7 @@ impl<'ctx> Resolver<'ctx> {
         if !name.is_empty() {
             if let Some(Some(obj)) = self.ctx.config_expr_context.last() {
                 let obj = obj.clone();
-                if let TypeKind::Schema(schema_ty) = &obj.ty.kind {
-                    self.check_config_attr(name, &key.get_span_pos(), schema_ty);
-                }
+                self.must_check_config_attr(name, &key.get_span_pos(), &obj.ty);
             }
         }
     }
@@ -343,6 +341,52 @@ impl<'ctx> Resolver<'ctx> {
         (suggs, suggestion)
     }
 
+    /// Check config attr has been defined.
+    pub(crate) fn must_check_config_attr(&mut self, attr: &str, range: &Range, ty: &TypeRef) {
+        if let TypeKind::Schema(schema_ty) = &ty.kind {
+            self.check_config_attr(attr, range, schema_ty)
+        } else if let TypeKind::Union(types) = &ty.kind {
+            let mut schema_names = vec![];
+            let mut total_suggs = vec![];
+            for ty in types {
+                if let TypeKind::Schema(schema_ty) = &ty.kind {
+                    if schema_ty.get_obj_of_attr(attr).is_none()
+                        && !schema_ty.is_mixin
+                        && schema_ty.index_signature.is_none()
+                    {
+                        let mut suggs =
+                            suggestions::provide_suggestions(attr, schema_ty.attrs.keys());
+                        total_suggs.append(&mut suggs);
+                        schema_names.push(schema_ty.name.clone());
+                    } else {
+                        // If there is a schema attribute that meets the condition, the type check passes
+                        return;
+                    }
+                }
+            }
+            if !schema_names.is_empty() {
+                self.handler.add_compile_error_with_suggestions(
+                    &format!(
+                        "Cannot add member '{}' to '{}'{}",
+                        attr,
+                        if schema_names.len() > 1 {
+                            format!("schemas {:?}", schema_names)
+                        } else {
+                            format!("schema {}", schema_names[0])
+                        },
+                        if total_suggs.is_empty() {
+                            "".to_string()
+                        } else {
+                            format!(", did you mean '{:?}'?", total_suggs)
+                        },
+                    ),
+                    range.clone(),
+                    Some(total_suggs),
+                );
+            }
+        }
+    }
+
     /// Check config attr has been defined.
     pub(crate) fn check_config_attr(&mut self, attr: &str, range: &Range, schema_ty: &SchemaType) {
         let runtime_type = kclvm_runtime::schema_runtime_type(&schema_ty.name, &schema_ty.pkgpath);
diff --git a/kclvm/sema/src/resolver/node.rs b/kclvm/sema/src/resolver/node.rs
index 50af0b492..1c1d694d0 100644
--- a/kclvm/sema/src/resolver/node.rs
+++ b/kclvm/sema/src/resolver/node.rs
@@ -160,6 +160,18 @@ impl<'ctx> MutSelfTypedResultWalker<'ctx> for Resolver<'ctx> {
                         value_ty = self.expr(&assign_stmt.value);
                         self.clear_config_expr_context(init_stack_depth as usize, false)
                     }
+                    TypeKind::List(_) | TypeKind::Dict(_) | TypeKind::Union(_) => {
+                        let obj = self.new_config_expr_context_item(
+                            "[]",
+                            expected_ty.clone(),
+                            start.clone(),
+                            end.clone(),
+                        );
+                        let init_stack_depth = self.switch_config_expr_context(Some(obj));
+                        value_ty = self.expr(&assign_stmt.value);
+                        self.check_assignment_type_annotation(assign_stmt, value_ty.clone());
+                        self.clear_config_expr_context(init_stack_depth as usize, false)
+                    }
                     _ => {
                         value_ty = self.expr(&assign_stmt.value);
                         // Check type annotation if exists.
diff --git a/kclvm/sema/src/resolver/test_fail_data/unmatched_nest_schema_attr_0.k b/kclvm/sema/src/resolver/test_fail_data/unmatched_nest_schema_attr_0.k
new file mode 100644
index 000000000..1750f4f3f
--- /dev/null
+++ b/kclvm/sema/src/resolver/test_fail_data/unmatched_nest_schema_attr_0.k
@@ -0,0 +1,11 @@
+schema Name:
+    name: str
+
+schema Config:
+    n: {str:Name}
+
+Config {
+    n = {
+        n.n = "n"
+    }
+}
diff --git a/kclvm/sema/src/resolver/test_fail_data/unmatched_nest_schema_attr_1.k b/kclvm/sema/src/resolver/test_fail_data/unmatched_nest_schema_attr_1.k
new file mode 100644
index 000000000..66f6324ba
--- /dev/null
+++ b/kclvm/sema/src/resolver/test_fail_data/unmatched_nest_schema_attr_1.k
@@ -0,0 +1,11 @@
+schema Name:
+    name: str
+
+schema Config:
+    n: [Name]
+
+Config {
+    n = [{
+        n = "n"
+    }]
+}
diff --git a/kclvm/sema/src/resolver/test_fail_data/unmatched_nest_schema_attr_2.k b/kclvm/sema/src/resolver/test_fail_data/unmatched_nest_schema_attr_2.k
new file mode 100644
index 000000000..77ff72246
--- /dev/null
+++ b/kclvm/sema/src/resolver/test_fail_data/unmatched_nest_schema_attr_2.k
@@ -0,0 +1,11 @@
+schema Name:
+    name: str
+
+schema Config:
+    n: {str:[Name]}
+
+Config {
+    n = {n = [{
+        n = "n"
+    }]}
+}
diff --git a/kclvm/sema/src/resolver/test_fail_data/unmatched_nest_schema_attr_3.k b/kclvm/sema/src/resolver/test_fail_data/unmatched_nest_schema_attr_3.k
new file mode 100644
index 000000000..8b7f9eff4
--- /dev/null
+++ b/kclvm/sema/src/resolver/test_fail_data/unmatched_nest_schema_attr_3.k
@@ -0,0 +1,14 @@
+schema Name1:
+    name1: str
+
+schema Name2:
+    name2: str
+
+schema Config:
+    n: Name1 | Name2
+
+Config {
+    n = {
+        n = "n"
+    }
+}
diff --git a/kclvm/sema/src/resolver/test_fail_data/unmatched_schema_attr_0.k b/kclvm/sema/src/resolver/test_fail_data/unmatched_schema_attr_0.k
new file mode 100644
index 000000000..f311d3092
--- /dev/null
+++ b/kclvm/sema/src/resolver/test_fail_data/unmatched_schema_attr_0.k
@@ -0,0 +1,6 @@
+schema Name:
+    name: str
+
+n: {str:Name} = {
+    n.n = "n"
+}
diff --git a/kclvm/sema/src/resolver/test_fail_data/unmatched_schema_attr_1.k b/kclvm/sema/src/resolver/test_fail_data/unmatched_schema_attr_1.k
new file mode 100644
index 000000000..bc80e9a91
--- /dev/null
+++ b/kclvm/sema/src/resolver/test_fail_data/unmatched_schema_attr_1.k
@@ -0,0 +1,6 @@
+schema Name:
+    name: str
+
+n: [Name] = [{
+    n = "n"
+}]
diff --git a/kclvm/sema/src/resolver/test_fail_data/unmatched_schema_attr_2.k b/kclvm/sema/src/resolver/test_fail_data/unmatched_schema_attr_2.k
new file mode 100644
index 000000000..6522cdd80
--- /dev/null
+++ b/kclvm/sema/src/resolver/test_fail_data/unmatched_schema_attr_2.k
@@ -0,0 +1,6 @@
+schema Name:
+    name: str
+
+n: {str:[Name]} = {n = [{
+    n = "n"
+}]}
diff --git a/kclvm/sema/src/resolver/test_fail_data/unmatched_schema_attr_3.k b/kclvm/sema/src/resolver/test_fail_data/unmatched_schema_attr_3.k
new file mode 100644
index 000000000..819b2751e
--- /dev/null
+++ b/kclvm/sema/src/resolver/test_fail_data/unmatched_schema_attr_3.k
@@ -0,0 +1,9 @@
+schema Name1:
+    name1: str
+
+schema Name2:
+    name2: str
+
+n: Name1 | Name2 = {
+    n = "n"
+}
diff --git a/kclvm/sema/src/resolver/tests.rs b/kclvm/sema/src/resolver/tests.rs
index d5c5b4763..0944913ca 100644
--- a/kclvm/sema/src/resolver/tests.rs
+++ b/kclvm/sema/src/resolver/tests.rs
@@ -159,6 +159,14 @@ fn test_resolve_program_fail() {
         "unique_key_error_1.k",
         "unmatched_index_sign_default_value.k",
         "unmatched_args.k",
+        "unmatched_nest_schema_attr_0.k",
+        "unmatched_nest_schema_attr_1.k",
+        "unmatched_nest_schema_attr_2.k",
+        "unmatched_nest_schema_attr_3.k",
+        "unmatched_schema_attr_0.k",
+        "unmatched_schema_attr_1.k",
+        "unmatched_schema_attr_2.k",
+        "unmatched_schema_attr_3.k",
     ];
     for case in cases {
         let path = Path::new(work_dir).join(case);
diff --git a/kclvm/sema/src/resolver/var.rs b/kclvm/sema/src/resolver/var.rs
index 1f650766d..63b3a393e 100644
--- a/kclvm/sema/src/resolver/var.rs
+++ b/kclvm/sema/src/resolver/var.rs
@@ -1,5 +1,4 @@
 use crate::resolver::Resolver;
-use crate::ty::TypeKind;
 use indexmap::IndexMap;
 use kclvm_ast::pos::GetPos;
 use kclvm_error::diagnostic::Range;
@@ -115,9 +114,7 @@ impl<'ctx> Resolver<'ctx> {
             for name in &names[1..] {
                 // Store and config attr check
                 if self.ctx.l_value {
-                    if let TypeKind::Schema(schema_ty) = &ty.kind {
-                        self.check_config_attr(name, &range, schema_ty);
-                    }
+                    self.must_check_config_attr(name, &range, &ty);
                 }
                 ty = self.load_attr(ty, name, range.clone());
                 tys.push(ty.clone());
diff --git a/kclvm/tools/src/LSP/src/completion.rs b/kclvm/tools/src/LSP/src/completion.rs
index c592f1d0a..1f7a8dd9e 100644
--- a/kclvm/tools/src/LSP/src/completion.rs
+++ b/kclvm/tools/src/LSP/src/completion.rs
@@ -1,5 +1,5 @@
 //! Complete for KCL
-//! Now supports code completion in treigger mode (triggered when user enters `.`, `:` and `=`), schema attr and global variables
+//! Now supports code completion in trigger mode (triggered when user enters `.`, `:` and `=`), schema attr and global variables
 //! and the content of the completion includes:
 //! + variable
 //! + schema attr name
@@ -7,7 +7,7 @@
 //!     + import path
 //!     + schema attr
 //!     + builtin function(str function)
-//!     + defitions in pkg
+//!     + definitions in pkg
 //!     + system module functions
 //! + assign(=, :)
 //!     + schema attr value
@@ -110,8 +110,8 @@ pub(crate) fn completion(
                 // Complete builtin functions in root scope and lambda
                 match scope.get_kind() {
                     kclvm_sema::core::scope::ScopeKind::Local => {
-                        if let Some(locol_scope) = gs.get_scopes().try_get_local_scope(&scope) {
-                            match locol_scope.get_kind() {
+                        if let Some(local_scope) = gs.get_scopes().try_get_local_scope(&scope) {
+                            match local_scope.get_kind() {
                                 kclvm_sema::core::scope::LocalSymbolScopeKind::Lambda => {
                                     completions.extend(BUILTIN_FUNCTIONS.iter().map(
                                         |(name, ty)| KCLCompletionItem {