diff --git a/kclvm/error/src/diagnostic.rs b/kclvm/error/src/diagnostic.rs
index 6c8034c2c..d2a203d6b 100644
--- a/kclvm/error/src/diagnostic.rs
+++ b/kclvm/error/src/diagnostic.rs
@@ -5,23 +5,11 @@ use std::hash::Hash;
 use crate::{ErrorKind, WarningKind};
 
 /// Diagnostic structure.
-#[derive(Clone, Debug, PartialEq, Eq)]
+#[derive(Clone, Debug, PartialEq, Eq, Hash)]
 pub struct Diagnostic {
     pub level: Level,
     pub messages: Vec<Message>,
     pub code: Option<DiagnosticId>,
-    pub data: Option<serde_json::Value>,
-}
-
-impl Hash for Diagnostic {
-    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
-        self.level.hash(state);
-        for message in &self.messages {
-            message.hash(state);
-        }
-        self.code.hash(state);
-        // The `data` field is not included in the hash calculation due to complexity.
-    }
 }
 
 /// Position describes an arbitrary source position including the filename,
@@ -120,10 +108,6 @@ impl Diagnostic {
         code: Option<DiagnosticId>,
         suggestions: Option<Vec<String>>,
     ) -> Self {
-        let data = suggestions.clone().map(|suggs| {
-            serde_json::json!({ "suggested_replacements": suggs })
-        });
-        // println!("Data received: {:?}", data);
         Diagnostic {
             level,
             messages: vec![Message {
@@ -131,10 +115,9 @@ impl Diagnostic {
                 style: Style::LineAndColumn,
                 message: message.to_string(),
                 note: note.map(String::from),
-                suggested_replacement: None, // Assuming your Message struct has such a field
+                suggested_replacement: suggestions.and_then(|v| v.into_iter().next()),
             }],
             code,
-            data, // Now includes suggestions if provided
         }
     }
 
diff --git a/kclvm/error/src/lib.rs b/kclvm/error/src/lib.rs
index 1109b6330..f805c3fcd 100644
--- a/kclvm/error/src/lib.rs
+++ b/kclvm/error/src/lib.rs
@@ -179,7 +179,6 @@ impl Handler {
             level: Level::Error,
             messages: msgs.to_owned(),
             code: Some(DiagnosticId::Error(err)),
-            data: None,
         };
         self.add_diagnostic(diag);
 
@@ -198,7 +197,6 @@ impl Handler {
                     suggested_replacement: None,
                 }],
                 code: Some(DiagnosticId::Suggestions),
-                data: None,
             });
         });
 
@@ -224,7 +222,6 @@ impl Handler {
             level: Level::Warning,
             messages: msgs.to_owned(),
             code: Some(DiagnosticId::Warning(warning)),
-            data: None,
         };
         self.add_diagnostic(diag);
 
diff --git a/kclvm/tools/src/LSP/src/quick_fix.rs b/kclvm/tools/src/LSP/src/quick_fix.rs
index 821345956..a46ba5408 100644
--- a/kclvm/tools/src/LSP/src/quick_fix.rs
+++ b/kclvm/tools/src/LSP/src/quick_fix.rs
@@ -14,7 +14,7 @@ pub(crate) fn quick_fix(uri: &Url, diags: &Vec<Diagnostic>) -> Vec<lsp_types::Co
                 match id {
                     DiagnosticId::Error(error) => match error {
                         ErrorKind::CompileError => {
-                            let replacement_text = extract_suggested_replacements(&diag.data).unwrap_or_else(|| "".to_string());
+                            let replacement_text = extract_suggested_replacement(&diag.data).unwrap_or_else(|| "".to_string());
                             let mut changes = HashMap::new();
                             changes.insert(
                                 uri.clone(),
@@ -87,11 +87,11 @@ pub(crate) fn quick_fix(uri: &Url, diags: &Vec<Diagnostic>) -> Vec<lsp_types::Co
     code_actions
 }
 
-fn extract_suggested_replacements(data: &Option<Value>) -> Option<String> {
+fn extract_suggested_replacement(data: &Option<Value>) -> Option<String> {
     data.as_ref().and_then(|data| {
         match data {
             Value::Object(obj) => {
-                obj.get("suggested_replacements").and_then(|val| {
+                obj.get("suggested_replacement").and_then(|val| {
                     match val {
                         Value::String(s) => Some(s.clone()),
                         Value::Array(arr) if !arr.is_empty() => arr.iter().filter_map(|v| v.as_str()).next().map(String::from),
diff --git a/kclvm/tools/src/LSP/src/to_lsp.rs b/kclvm/tools/src/LSP/src/to_lsp.rs
index d13778ff8..168b0e165 100644
--- a/kclvm/tools/src/LSP/src/to_lsp.rs
+++ b/kclvm/tools/src/LSP/src/to_lsp.rs
@@ -5,6 +5,7 @@ use kclvm_error::Message;
 use kclvm_error::Position as KCLPos;
 use lsp_types::*;
 use ra_ap_vfs::FileId;
+use serde_json::json;
 
 use crate::state::LanguageServerSnapshot;
 use std::{
@@ -43,6 +44,10 @@ fn kcl_msg_to_lsp_diags(
     let start_position = lsp_pos(&range.0);
     let end_position = lsp_pos(&range.1);
 
+    let data = msg.suggested_replacement.as_ref().map(|s| {
+        json!({ "suggested_replacement": [s] })
+    });
+
     let related_information = if related_msg.is_empty() {
         None
     } else {
@@ -72,7 +77,7 @@ fn kcl_msg_to_lsp_diags(
         message: msg.message.clone(),
         related_information,
         tags: None,
-        data: None,
+        data: data,
     }
 }
 
@@ -97,8 +102,6 @@ pub fn kcl_diag_to_lsp_diags(diag: &KCLDiagnostic, file_name: &str) -> Vec<Diagn
             } else {
                 None
             };
-            
-            let data = diag.data.clone();
 
             let lsp_diag = kcl_msg_to_lsp_diags(
                 msg,
@@ -107,12 +110,7 @@ pub fn kcl_diag_to_lsp_diags(diag: &KCLDiagnostic, file_name: &str) -> Vec<Diagn
                 code,
             );
 
-            let lsp_diag_with_data = Diagnostic {
-                data,
-                ..lsp_diag
-            };
-
-            diags.push(lsp_diag_with_data);
+            diags.push(lsp_diag);
         }
     }
     diags