diff --git a/src/core/sv_parser.rs b/src/core/sv_parser.rs
index 4038b77..35dc85e 100644
--- a/src/core/sv_parser.rs
+++ b/src/core/sv_parser.rs
@@ -2,6 +2,7 @@ use std::fs::File;
 use std::io::BufRead;
 use std::{collections::HashMap, io::BufReader};
 use std::path::PathBuf;
+use anyhow::Error;
 use sv_parser::{parse_sv, unwrap_node, ConstantMintypmaxExpression, GateInstantiation, ListOfParameterAssignments, ListOfPortConnections, Locate, PackedDimensionRange, RefNode, SyntaxTree};
 
 use super::fast_hdlparam::{FastHdlparam, Macro};
@@ -16,14 +17,15 @@ pub fn sv_parser(path: &str) -> Option<FastHdlparam> {
 
     let result = parse_sv(&path, &defines, &includes, false, true);
     if let Ok((syntax_tree, _)) = result {
-        let hdlparam = make_fast_from_syntaxtree(&syntax_tree, &path);
-        return Some(hdlparam);
+        if let Ok(hdlparam) = make_fast_from_syntaxtree(&syntax_tree, &path) {
+            return Some(hdlparam);
+        }
     }
 
     None
 }
 
-pub fn make_fast_from_syntaxtree(syntax_tree: &SyntaxTree, path: &PathBuf) -> FastHdlparam {
+pub fn make_fast_from_syntaxtree(syntax_tree: &SyntaxTree, path: &PathBuf) -> Result<FastHdlparam, Error> {
     let mut hdlparam = FastHdlparam {
         fast_macro: Macro {
             defines: Vec::new(),
@@ -96,8 +98,13 @@ pub fn make_fast_from_syntaxtree(syntax_tree: &SyntaxTree, path: &PathBuf) -> Fa
                         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 = get_identifier(unwrap_node!(data_type, SimpleIdentifier, Keyword).unwrap()).unwrap();
-                                syntax_tree.get_str(&id).unwrap()
+                                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"
                         };
@@ -129,8 +136,12 @@ pub fn make_fast_from_syntaxtree(syntax_tree: &SyntaxTree, path: &PathBuf) -> Fa
 
                 let net_type = match unwrap_node!(x, DataType, ImplicitDataType) {
                     Some(RefNode::DataType(x)) => {
-                        let id = unwrap_node!(x, Keyword).unwrap();
-                        syntax_tree.get_str(&get_identifier(id).unwrap()).unwrap()
+                        let id = unwrap_node!(x, Keyword);
+                        if id != None {
+                            syntax_tree.get_str(&get_identifier(id.unwrap()).unwrap()).unwrap()
+                        } else {
+                            "unknown"
+                        }
                     },
                     Some(RefNode::ImplicitDataType(_)) => "wire",
                     _ => "unknown"
@@ -180,8 +191,12 @@ pub fn make_fast_from_syntaxtree(syntax_tree: &SyntaxTree, path: &PathBuf) -> Fa
                 } else {
                     match unwrap_node!(x, DataType, ImplicitDataType) {
                         Some(RefNode::DataType(x)) => {
-                            let id = unwrap_node!(x, Keyword).unwrap();
-                            syntax_tree.get_str(&get_identifier(id).unwrap()).unwrap()
+                            let id = unwrap_node!(x, Keyword);
+                            if id != None {
+                                syntax_tree.get_str(&get_identifier(id.unwrap()).unwrap()).unwrap()
+                            } else {
+                                "unknown"
+                            }
                         },
                         Some(RefNode::ImplicitDataType(_)) => "wire",
                         _ => "unknown"
@@ -276,7 +291,7 @@ pub fn make_fast_from_syntaxtree(syntax_tree: &SyntaxTree, path: &PathBuf) -> Fa
         }
     }
 
-    hdlparam
+    Ok(hdlparam)
 }
 
 fn get_inst_param_last_locate(x: &ListOfParameterAssignments) -> Option<(Locate, Locate)> {
diff --git a/src/custom_request.rs b/src/custom_request.rs
index 0b11294..d1e1da4 100644
--- a/src/custom_request.rs
+++ b/src/custom_request.rs
@@ -114,8 +114,9 @@ pub fn do_fast(path: String) -> Result<FastHdlparam> {
     );
 
     if let Some(syntax_tree) = parse_result {
-        let hdlparam = make_fast_from_syntaxtree(&syntax_tree, &path_buf);
-        return Ok(hdlparam);
+        if let Ok(hdlparam) = make_fast_from_syntaxtree(&syntax_tree, &path_buf) {
+            return Ok(hdlparam);
+        }
     }
 
     let api_error = tower_lsp::jsonrpc::Error {
diff --git a/src/sources.rs b/src/sources.rs
index 584f678..3437658 100644
--- a/src/sources.rs
+++ b/src/sources.rs
@@ -239,7 +239,19 @@ impl Sources {
                 // 计算 fast
                 if let Some(syntax_tree) = &syntax_tree {
                     let path = PathBuf::from(uri.path().to_string());
-                    let fast = make_fast_from_syntaxtree(&syntax_tree, &path);
+                    let fast = if let Ok(fast) = make_fast_from_syntaxtree(&syntax_tree, &path) {
+                        fast
+                    } else {
+                        crate::core::fast_hdlparam::FastHdlparam {
+                            fast_macro: crate::core::fast_hdlparam::Macro {
+                                defines: Vec::new(),
+                                errors: Vec::new(),
+                                includes: Vec::new(),
+                                invalid: Vec::new()
+                            },
+                            content: Vec::new()
+                        }
+                    };
                     update_fast_to_client(backend.clone(), fast);
                 }
 
diff --git a/testfiles/hierarchical_name_of_type.sv b/testfiles/hierarchical_name_of_type.sv
new file mode 100644
index 0000000..3ff199d
--- /dev/null
+++ b/testfiles/hierarchical_name_of_type.sv
@@ -0,0 +1,8 @@
+module ibex_alu #(
+    parameter ibex_pkg::rv32b_e RV32B = ibex_pkg::RV32BNone
+) (
+    input ibex_pkg::alu_op_e operator_i,
+    input logic[31:0] operand_a_i,
+    input logic[31:0] operand_b_i
+);
+endmodule
\ No newline at end of file