diff --git a/src/core/sv_parser.rs b/src/core/sv_parser.rs
index cf8e57f..024f5d9 100644
--- a/src/core/sv_parser.rs
+++ b/src/core/sv_parser.rs
@@ -157,6 +157,55 @@ pub fn make_fast_from_syntaxtree(syntax_tree: &SyntaxTree, path: &PathBuf) -> Re
                     }
                 }
             }
+            RefNode::ParameterDeclaration(x) => {
+                if let Some(id) = unwrap_node!(x, ParameterIdentifier) {
+                    let id = get_identifier(id).unwrap();
+                    let name = syntax_tree.get_str(&id).unwrap();
+                    match unwrap_node!(x, ParameterDeclarationParam, ParameterPortDeclarationParamList) {
+                        Some(RefNode::ParameterDeclarationParam(param_node)) => {
+                            // println!("{:?}", param_node);
+                            let keyword_locate = param_node.nodes.0.nodes.0;
+                            // println!("keyword {:#?}", keyword_locate);
+                            let (start_line, start_character) = (id.line, get_column_by_offset(&content, keyword_locate.offset) as u32);
+                            let (mut end_line, mut end_character) = (id.line, start_character + id.len as u32);
+                            let net_type = match unwrap_node!(param_node, DataType) {
+                                Some(RefNode::DataType(data_type)) => {
+                                    let id = unwrap_node!(data_type, SimpleIdentifier, Keyword);
+                                    if id == None {
+                                        "wire"
+                                    } else {
+                                        let id = get_identifier(id.unwrap()).unwrap();
+                                        syntax_tree.get_str(&id).unwrap()
+                                    }
+                                }
+                                _ => "wire"
+                            };
+                            let init = if let Some(init) = unwrap_node!(param_node, ConstantMintypmaxExpression) {
+                                match init {
+                                    RefNode::ConstantMintypmaxExpression(expression) => {
+                                        // println!("expression {:?}", x);
+                                        let param_init = sv_parser::NeedParseExpression::Parameter(expression.clone());
+                                        let (exp, last_locate) = parse_expression(&syntax_tree, &param_init);
+                                        (end_line, end_character) = if last_locate != None {
+                                            // println!("param {:?} lastlocate {:?}", name, last_locate);
+                                            (last_locate.unwrap().line, (get_column_by_offset(&content, last_locate.unwrap().offset) + last_locate.unwrap().len) as u32)
+                                        } else { 
+                                            (end_line, end_character) 
+                                        };
+                                        // println!("end pos {} {}", end_line, end_character);
+                                        exp
+                                    }
+                                    _ => "unknown".to_string()
+                                }
+                            } else {
+                                "unknown".to_string()
+                            };
+                            hdlparam.add_parameter(name, net_type, init.as_str(), start_line, start_character, end_line, end_character);
+                        }
+                        _ => ()
+                    }
+                }
+            }
             RefNode::PortDeclaration(x) => {
                 if let Some(id) = unwrap_node!(x, InputDeclaration, OutputDeclaration, InoutDeclaration) {
                     let id = get_identifier(id).unwrap();