diff --git a/src/completion/feature.rs b/src/completion/feature.rs
index e5c83ae..74a2607 100644
--- a/src/completion/feature.rs
+++ b/src/completion/feature.rs
@@ -162,10 +162,8 @@ fn get_position_port_param_completion(
         // 在当前文件的 fast 中寻找
         for module in &hdl_file.fast.content {
             for instance in &module.instances {
-                if let Some(param_range) = &instance.instparams {
-                    let mut param_range = param_range.clone();
-                    param_range.affine(-1, -1);
-                    if param_range.contains(pos) {
+                if let Some(_) = &instance.instparams {
+                    if instance.gen_dot_completion_param_range().contains(pos) {
                         // 补全当前 module 的所有 param
                         let inst_module = hdl_param.find_module_by_name(&instance.inst_type);
                         if inst_module.is_some() {
@@ -196,7 +194,7 @@ fn get_position_port_param_completion(
                 }
 
                 if instance.instports.is_some() {
-                    let port_range = instance.gen_dot_completion_port_range();                    
+                    let port_range = instance.gen_dot_completion_port_range();
                     if port_range.contains(pos) {
                         let inst_module = hdl_param.find_module_by_name(&instance.inst_type);
                         if inst_module.is_some() {
@@ -208,10 +206,10 @@ fn get_position_port_param_completion(
                                     ..CompletionItemLabelDetails::default()
                                 };
 
-                                let param_desc = make_port_desc(&port);
+                                let port_desc = make_port_desc(&port);
                                 let c_item = CompletionItem {
                                     label: port.name,
-                                    detail: Some(param_desc),
+                                    detail: Some(port_desc),
                                     label_details: Some(label_details),
                                     kind: Some(CompletionItemKind::PROPERTY),
                                     ..CompletionItem::default()
diff --git a/src/core/hdlparam.rs b/src/core/hdlparam.rs
index b66ce32..63f4fd3 100644
--- a/src/core/hdlparam.rs
+++ b/src/core/hdlparam.rs
@@ -224,8 +224,8 @@ impl Instance {
                 new_port_range.start.line = param_range.end.line - 1;
                 new_port_range.start.character = param_range.end.character;
             } else {
-                new_port_range.start.line = self.range.end.line;
-                new_port_range.start.character = self.range.end.character + 1;
+                new_port_range.start.line = self.range.start.line;
+                new_port_range.start.character = self.range.start.character + 1;
             }
 
             new_port_range.end.line += 1;
@@ -241,8 +241,8 @@ impl Instance {
         // TODO: 精心调制这个方法
         if let Some(param_range) = &self.instparams {
             let mut new_param_range = param_range.clone();
-            new_param_range.start.line = self.range.end.line;
-            new_param_range.start.character = self.range.end.character;
+            new_param_range.start.line = self.range.start.line;
+            new_param_range.start.character = self.range.start.character + 1;
             new_param_range.end.line += 1;
             return new_param_range;
         }