diff --git a/src/core/primitive_parser.rs b/src/core/primitive_parser.rs
index 44f1281..ec954ca 100644
--- a/src/core/primitive_parser.rs
+++ b/src/core/primitive_parser.rs
@@ -5,6 +5,7 @@ use std::{collections::HashMap, fs::File};
 use std::io::{BufReader, Read};
 
 use bincode::Error;
+use regex::Regex;
 use ropey::Rope;
 use serde::{Serialize, Deserialize};
 use sv_parser::{unwrap_node, RefNode};
@@ -28,6 +29,27 @@ impl PrimitiveText {
         let mut text_map = self.name_to_text.write().unwrap();
         text_map.insert(name.to_owned(), text.to_owned());
     }
+
+    pub fn get_comment(&self, name: &str, text: &str) -> String {
+        if let Some(comment) = PrimitiveText::extract_pattern_comments(text).get(name) {
+            (*comment).clone()
+        } else {
+            "".to_string()
+        }
+    }
+
+    fn extract_pattern_comments(text: &str) -> HashMap<String, String> {
+        let re = Regex::new(r"\s*\.(?P<x>[^\(]+)\((?P<y>[^\)]+)\)(?:,)?\s*//\s*(?P<z>.+)").unwrap();
+        text.lines()
+            .filter_map(|line| {
+                re.captures(line).map(|caps| {
+                    let name = caps.name("x").unwrap().as_str().to_string();
+                    let comment = caps.name("z").unwrap().as_str().to_string();
+                    (name, comment)
+                })
+            })
+            .collect()
+    }
 }
 
 #[derive(Debug, Serialize, Deserialize, Clone)]
@@ -102,7 +124,7 @@ fn xml_parser(path: &str) -> Result<PrimitiveXml, Error> {
         }
     }
 
-    Ok((primitive_xml))
+    Ok(primitive_xml)
 }
 
 fn xml_parse_template(parser: &mut EventReader<BufReader<File>>) -> Option<(String, Template)> {
@@ -242,10 +264,11 @@ fn xml_parse_text(text: &str) -> Option<(String, String, FastHdlparam)> {
 #[cfg(test)]
 mod tests {
     use std::{fs::{self, File}, io::Write, path::Path};
+
     use super::{init_parse_primitive_files, xml_parser};
 
-    const TESTFILE: &str = "D:\\work\\playground\\digital-lsp-server\\primitive_files\\verilog2.xml";
-	const TESTDIR: &str = "/home/dide/project/Digital-Test/Digital-IDE-test/user/factory/xilinx";
+    const TESTFILE: &str = "primitive_files/verilog2.xml";
+    const TESTDIR: &str = "primitive_files";
 
     #[test]
     fn gen_primitive_bin() {
diff --git a/src/hover/feature.rs b/src/hover/feature.rs
index f81b9e5..1e64a72 100644
--- a/src/hover/feature.rs
+++ b/src/hover/feature.rs
@@ -1,11 +1,11 @@
-use std::{path::PathBuf, str::FromStr};
+use std::{path::PathBuf, str::FromStr, sync::Arc};
 
 use log::info;
 use regex::Regex;
 use ropey::RopeSlice;
 use tower_lsp::lsp_types::{Hover, HoverContents, LanguageString, MarkedString, Position, Range, Url};
 
-use crate::{core::{self, hdlparam::{Define, FastHdlparam}}, definition::{DefinitionType, GenericDec}, server::LSPServer};
+use crate::{core::{self, hdlparam::{Define, FastHdlparam}, primitive_parser::PrimitiveText}, server::LSPServer};
 
 use super::{get_language_id_by_path_str, get_word_range_at_position, resolve_path, to_escape_path};
 
@@ -249,11 +249,25 @@ fn goto_instantiation<'a>(
                     // info!("port_range: {port_range:#?}");
                     // info!("position port find belong module: {:?}", module);
 
-                    for port in &module.ports {
-                        if token_name == port.name {
-                            let file_type = server.srcs.hdl_param.find_file_type_by_module_name(&instance.inst_type);
-                            let hover = make_port_desc_hover(&file_type, port, range, language_id);
-                            return Some(hover);
+                    let file_type = server.srcs.hdl_param.find_file_type_by_module_name(&instance.inst_type);
+                    if file_type == "primitives" {
+                        let primitives_text = server.srcs.primitive_text.clone();
+                        let instance_assignments = &module.instances.first().unwrap().intstport_assignments;
+                        for assignment in instance_assignments {
+                            if assignment.port.clone().unwrap() == token_name {
+                                let hover = make_primitives_port_desc_hover(
+                                    primitives_text, &instance.inst_type,
+                                    assignment, range, language_id
+                                );
+                                return Some(hover);
+                            }
+                        }
+                    } else {
+                        for port in &module.ports {
+                            if token_name == port.name {
+                                let hover = make_port_desc_hover(&file_type, port, range, language_id);
+                                return Some(hover);
+                            }
                         }
                     }
                     return None;
@@ -296,6 +310,30 @@ pub fn hover_position_port_param(
     None
 }
 
+fn make_primitives_port_desc_hover(
+    primitives_text: Arc<PrimitiveText>,
+    primitives_name: &str,
+    inst_port: &crate::core::hdlparam::InstPort,
+    range: &Range, language_id: &str) -> Hover {
+
+    let name = inst_port.port.clone().unwrap();
+    let text_map = primitives_text.name_to_text.read().unwrap();
+    let comment = if let Some(text) = text_map.get(primitives_name) {
+        primitives_text.get_comment(&name, text)
+    } else {
+        "".to_string()
+    };
+
+    let language_string = LanguageString {
+        language: language_id.to_string(),
+        value: name + " // " + &comment,
+    };
+    Hover {
+        contents: HoverContents::Scalar(MarkedString::LanguageString(language_string)),
+        range: Some(range.clone())
+    }
+}
+
 fn make_port_desc_hover(file_type: &str, port: &crate::core::hdlparam::Port, range: &Range, language_id: &str) -> Hover {
     info!("enter make_port_desc_hover, file_type: {}", file_type);