diff --git a/src/core/hdlparam.rs b/src/core/hdlparam.rs
index eb3b99c..85c5047 100644
--- a/src/core/hdlparam.rs
+++ b/src/core/hdlparam.rs
@@ -34,11 +34,39 @@ impl Range {
         LspRange::new(start_pos, end_pos)
     }
 
+    #[allow(unused)]
+    pub fn from_lsp_range(range: &LspRange) -> Range {
+        Range {
+            start: Position {
+                line: range.start.line,
+                character: range.start.character
+            },
+            end: Position {
+                line: range.end.line,
+                character: range.end.character
+            }
+        }
+    }
+
     /// 判断输入的 position 是否在当前 range 内
     pub fn contains(&self, postion: &LspPosition) -> bool {
         compare_pos(&self.start.to_lsp_position(), postion) != 1 && compare_pos(postion, &self.end.to_lsp_position()) != 1
     }
 
+    #[allow(unused)]
+    pub fn before(&self, range: &Range) -> bool {
+        let current_pos = &self.end.to_lsp_position();
+        let target_pos = &range.start.to_lsp_position();
+        compare_pos(current_pos, target_pos) != 1
+    }
+
+    #[allow(unused)]
+    pub fn after(&self, range: &Range) -> bool {
+        let current_pos = &self.start.to_lsp_position();
+        let target_pos = &range.end.to_lsp_position();
+        compare_pos(current_pos, target_pos) != -1
+    }
+
     /// 对所有的 line 或者 所有的 character 进行偏移操作
     pub fn affine(&mut self, line_offset: i32, character_offset: i32) -> &Range {
         if line_offset > 0 {
@@ -61,6 +89,10 @@ impl Range {
     }
 }
 
+/// 比较两个 pos 的位置关系
+/// 1：pos1 在 pos2 后面
+/// 0：pos1 和 pos2 一样
+/// -1：pos1 在 pos2 前面 
 fn compare_pos(pos1: &LspPosition, pos2: &LspPosition) -> i32 {
     if pos1.line > pos2.line {
         1
diff --git a/src/inlay_hint/mod.rs b/src/inlay_hint/mod.rs
new file mode 100644
index 0000000..9ddbfb7
--- /dev/null
+++ b/src/inlay_hint/mod.rs
@@ -0,0 +1,27 @@
+use crate::server::LSPServer;
+use crate::utils::*;
+#[allow(unused)]
+use log::info;
+use tower_lsp::lsp_types::*;
+
+mod sv;
+mod vhdl;
+
+impl LSPServer {
+    pub fn inlay_hint(&self, params: InlayHintParams) -> Option<Vec<InlayHint>> {
+        let language_id = get_language_id_by_uri(&params.text_document.uri);
+        match language_id.as_str() {
+            "vhdl" => vhdl::inlay_hint(
+                self,
+                &params
+            ),
+
+            "verilog" | "systemverilog" => sv::inlay_hint(
+                self,
+                &params
+            ),
+            
+            _ => None
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/inlay_hint/sv.rs b/src/inlay_hint/sv.rs
new file mode 100644
index 0000000..9e59f9d
--- /dev/null
+++ b/src/inlay_hint/sv.rs
@@ -0,0 +1,42 @@
+use std::{path::PathBuf, str::FromStr};
+
+use crate::{core, server::LSPServer};
+#[allow(unused)]
+use log::info;
+use tower_lsp::lsp_types::*;
+
+use super::to_escape_path;
+
+pub fn inlay_hint(server: &LSPServer, params: &InlayHintParams) -> Option<Vec<InlayHint>> {
+    let uri = &params.text_document.uri;
+    let path = PathBuf::from_str(uri.path()).unwrap();
+    let path = to_escape_path(&path);
+    let path_string = path.to_str().unwrap();
+    let visible_range = core::hdlparam::Range::from_lsp_range(&params.range);
+
+    let fast_map = server.srcs.hdl_param.path_to_hdl_file.read().unwrap();
+    // 先找到 当前 所在的 hdlfile
+    if let Some(hdl_file) = &fast_map.get(path_string) {
+        let fast = &hdl_file.fast;
+        let mut hints = Vec::<InlayHint>::new();
+        // 制作例化模块的 hint
+        for module in &fast.content {
+            for instance in &module.instances {
+                if let Some(instport_range) = &instance.instports {
+                    // 根据在可见视图外面的 range 就不管了
+                    if instport_range.before(&visible_range) || instport_range.after(&visible_range) {
+                        continue;
+                    }
+                    
+                }
+                
+            }
+        }
+    }
+
+    None
+}
+
+fn make_instport_hint(params: &InlayHintParams) {
+
+}
\ No newline at end of file
diff --git a/src/inlay_hint/vhdl.rs b/src/inlay_hint/vhdl.rs
new file mode 100644
index 0000000..625ca03
--- /dev/null
+++ b/src/inlay_hint/vhdl.rs
@@ -0,0 +1,8 @@
+use crate::server::LSPServer;
+#[allow(unused)]
+use log::info;
+use tower_lsp::lsp_types::*;
+
+pub fn inlay_hint(server: &LSPServer, params: &InlayHintParams) -> Option<Vec<InlayHint>> {
+    None
+}
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index 8966cd9..4ab6e0f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -18,6 +18,9 @@ pub mod document_symbol;
 // 语法高亮
 pub mod document_highlight;
 
+// 内部提示
+pub mod inlay_hint;
+
 // 诊断
 pub mod diagnostics;
 
diff --git a/src/main.rs b/src/main.rs
index f7b98d6..7db8313 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -13,6 +13,7 @@ mod definition;
 mod hover;
 mod document_symbol;
 mod document_highlight;
+mod inlay_hint;
 mod utils;
 mod diagnostics;
 mod format;
diff --git a/src/server.rs b/src/server.rs
index 5570d59..d2ab856 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -304,4 +304,11 @@ impl LanguageServer for Backend {
     ) -> Result<Option<Vec<DocumentHighlight>>> {
         Ok(self.server.document_highlight(params))
     }
+
+    async fn inlay_hint(
+        &self,
+        params: InlayHintParams
+    ) -> Result<Option<Vec<InlayHint>>> {
+        Ok(self.server.inlay_hint(params))
+    }
 }