diff --git a/src/completion/sv.rs b/src/completion/sv.rs
index 0d87213..9e5bb34 100644
--- a/src/completion/sv.rs
+++ b/src/completion/sv.rs
@@ -199,6 +199,23 @@ fn get_completion_token(text: &Rope, line: RopeSlice, pos: Position) -> String {
     }
 }
 
+fn make_primitives_instantiation_code(text: &str) -> String {
+    let mut instantiations = text.lines()
+    .filter(|line| !line.trim().is_empty() && !line.trim().starts_with("//"))
+    .collect::<Vec<&str>>();
+    // remove fake module and endmodule
+    instantiations.remove(0);
+    instantiations.pop();
+
+    instantiations.iter().map(|line| {
+        let trimmed = line.trim_start();
+        if trimmed.contains('.') {
+            format!("\t{}", trimmed)
+        } else {
+            trimmed.to_string()
+        }
+    }).collect::<Vec<String>>().join("\n")
+}
 
 
 fn make_instantiation_code(module: &crate::core::hdlparam::Module) -> String {
@@ -270,27 +287,41 @@ fn make_module_completions(
 
     let prefix = token.to_string().to_lowercase();
     let path_to_files = server.srcs.hdl_param.path_to_hdl_file.read().unwrap();
-    
+
     // 遍历 hdlparam 中所有的 modules
     for (path_string, hdl_file) in path_to_files.iter() {
         for module in &hdl_file.fast.content {
             if !module.name.to_string().to_lowercase().starts_with(&prefix) {
                 continue;
             }
-            let insert_text = make_instantiation_code(module);
-            let module_profile = make_module_profile_code(module);
+            let (insert_text, module_profile, define_info) = if hdl_file.fast.file_type == "primitives" {
+                let primitive_map = server.srcs.primitive_text.name_to_text.read().unwrap();
+                if let Some(text) = primitive_map.get(&module.name) {
+                    (
+                        make_primitives_instantiation_code(&text),
+                        (*text).clone(),
+                        format!("[Definition] Primitive module: {}", module.name)
+                    )
+                } else {
+                    continue;
+                }
+            } else {
+                let path_uri = Url::from_file_path(path_string.to_string()).unwrap().to_string();
+                let def_row = module.range.start.line;
+                let def_col = module.range.start.character;
 
-            let path_uri = Url::from_file_path(path_string.to_string()).unwrap().to_string();
-            let def_row = module.range.start.line;
-            let def_col = module.range.start.character;
-            let define_info = format!("Go to [Definition]({path_uri}#L{def_row}:{def_col})");
+                (
+                    make_instantiation_code(module),
+                    make_module_profile_code(module),
+                    format!("Go to [Definition]({path_uri}#L{def_row}:{def_col})")
+                )
+            };
 
             let module_profile = MarkupContent {
                 kind: MarkupKind::Markdown,
                 value: format!("```{}\n{}\n```\n{}", language_id, module_profile, define_info)
             };
 
-            
             let item = CompletionItem {
                 label: module.name.to_string(),
                 detail: Some("module instantiation".to_string()),