diff --git a/src/completion/feature.rs b/src/completion/feature.rs
index 74a2607..d7dfb53 100644
--- a/src/completion/feature.rs
+++ b/src/completion/feature.rs
@@ -171,7 +171,7 @@ fn get_position_port_param_completion(
                             let mut completion_items = Vec::<CompletionItem>::new();
                             for param in inst_module.params {
                                 let label_details = CompletionItemLabelDetails {
-                                    detail: Some("parameter".to_string()),
+                                    detail: None,
                                     ..CompletionItemLabelDetails::default()
                                 };
 
@@ -202,7 +202,7 @@ fn get_position_port_param_completion(
                             let mut completion_items = Vec::<CompletionItem>::new();
                             for port in inst_module.ports {
                                 let label_details = CompletionItemLabelDetails {
-                                    detail: Some("port".to_string()),
+                                    detail: None,
                                     ..CompletionItemLabelDetails::default()
                                 };
 
diff --git a/src/hover/feature.rs b/src/hover/feature.rs
index 3559cbe..d81ca1e 100644
--- a/src/hover/feature.rs
+++ b/src/hover/feature.rs
@@ -74,7 +74,7 @@ fn convert_to_sign_unsign<'a>(tag: &'a str, digit_string: &str) -> Option<(Strin
 
 /// 将 1'b1 翻译成 10进制
 pub fn hover_format_digit(line: &RopeSlice, pos: Position, language_id: &str) -> Option<Hover> {
-    let regex = Regex::new(r"[0-9'bho]").unwrap();
+    let regex = Regex::new(r"[0-9'bho_]").unwrap();
     let token_result = get_word_range_at_position(line, pos, regex);
 
     if token_result.is_none() {
diff --git a/src/hover/sv.rs b/src/hover/sv.rs
index 17eeba5..4a3208c 100644
--- a/src/hover/sv.rs
+++ b/src/hover/sv.rs
@@ -41,10 +41,8 @@ pub fn hover(server: &LSPServer, params: &HoverParams) -> Option<Hover> {
 
     // info!("enter hover_module_declaration");
     // match module name
-    if let Some(hover) = hover_module_declaration(server, &token, &language_id) {
-        // info!("[LSPServer] in hover: get module hover");
-        if hover_for_module(server, pos, doc) {
-            // info!("[LSPServer] in hover: it is instance");
+    if hover_for_module(server, pos, doc) {
+        if let Some(hover) = hover_module_declaration(server, &token, &language_id) {
             return Some(hover);
         }
     }