diff --git a/src/function/treeView/common.ts b/src/function/treeView/common.ts
new file mode 100644
index 0000000..022da96
--- /dev/null
+++ b/src/function/treeView/common.ts
@@ -0,0 +1,51 @@
+const xilinx = new Set<string>([
+    "IBUFDS_GTE2", "IBUFDS_GTE3", "OBUFDS_GTE3_ADV", "OBUFDS_GTE3",
+    "XADC", "SYSMONE1",
+    "DSP48E1", "DSP48E2", 
+    "BUFGCE_1", "BUFGCE", "BUFG", "BUFH", "BUFHCE", "BUFIO", "BUFMR", "BUFMRCE", "BUFR",
+    "BUFGMUX_CTRL", "BUFGCTRL", "BUFGMUX", "BUFGMUX_1",
+    "MMCME2_ADV", "PLLE2_ADV", "MMCME2_BASE", "PLLE2_BASE",
+    "MMCME3_ADV", "PLLE3_ADV", "MMCME3_BASE", "PLLE3_BASE",
+    "EFUSE_USR", "BSCANE2", "USR_ACCESSE2", "FRAME_ECCE2", "DNA_PORT", "DNA_PORT2", "ICAPE2", "CAPTUREE2", "STARTUPE2", "ICAPE3",
+    "IOBUFDS", "IOBUFDS_INTERMDISABLE", "IOBUFDS_DIFF_OUT", "IOBUFDS_DIFF_OUT_INTERMDISABLE", "IOBUF", "IOBUF_INTERMDISABLE",
+    "IDDR_2CLK", "IDDR", "ODDR", "DCIRESET", "IDDRE1", "ODDRE1",
+    "IN_FIFO", "OUT_FIFO",
+    "IBUFDS", "IBUFDS_IBUFDISABLE", "IBUFDS_DIFF_OUT", "IBUFDS_DIFF_OUT_IBUFDISABLE", "IBUFDS_DIFF_OUT_INTERMDISABLE", "IBUFDS_INTERMDISABLE", "IBUF", "IBUF_IBUFDISABLE", "IBUF_INTERMDISABLE", "BUFG_GT_SYNC", 
+    "IDELAYCTRL", "IDELAYE2",
+    "ISERDESE2", "OSERDESE2",
+    "OBUFDS", "OBUFTDS", "OBUF", "OBUFT",
+    "KEEPER", "PULLDOWN", "PULLUP",
+    "RAMB18E1", "RAMB36E1", "RAMB18E2", "RAMB36E2",
+    "RAM32X1D_1", "RAM32X1D", "RAM64X1D", "RAM128X1D",
+    "RAM32M", "RAM64M", "RAM32M16", "RAM64M8",
+    "RAM32X1S_1",  "RAM32X1S", "RAM32X2S",
+    "RAM64X1S_1",  "RAM64X1S", "RAM64X8SW",
+    "RAM128X1S_1", "RAM128X1S",
+    "RAM256X1S", "RAM512X1S",
+    "ROM32X1", "ROM64X1", "ROM128X1", "ROM256X1",
+    "FIFO18E1", "FIFO36E1", "FIFO18E2", "FIFO36E2",
+    "IDDR_2CLK", "IDDR", "ODDR",
+    "FDCE", "FDPE", "FDRE", "FDSE",
+    "LDCE", "LDPE",
+    "CARRY4", "CARRY8", "LUT6_2", "CFGLUT5",
+    "AND2B1L", "OR2L",
+    "LUT1", "LUT1_D", "LUT1_L",
+    "LUT2", "LUT2_D", "LUT2_L",
+    "LUT3", "LUT3_D", "LUT3_L",
+    "LUT4", "LUT4_D", "LUT4_L",
+    "LUT5", "LUT5_D", "LUT5_L",
+    "LUT6", "LUT6_D", "LUT6_L",
+    "MUXF7", "MUXF7_D", "MUXF7_L",
+    "MUXF8", "MUXF8_D", "MUXF8_L",
+    "MUXF9",
+    "SRL16E", "SRLC32E",
+    "MASTER_JTAG", "STARTUPE3", "HARD_SYNC"
+]);
+
+
+enum ItemMode { vhdl, systemverilog, verilog, remote, cells };
+
+
+export {
+    xilinx
+};
\ No newline at end of file
diff --git a/src/function/treeView/index.ts b/src/function/treeView/index.ts
index e69de29..91428c8 100644
--- a/src/function/treeView/index.ts
+++ b/src/function/treeView/index.ts
@@ -0,0 +1,53 @@
+import * as vscode from 'vscode';
+import { AbsPath } from '../../global';
+
+interface ModuleDataItem {
+    icon: string,           // 图标
+    name: string,           // module name
+    type: string,           
+    path: AbsPath,                // path of the file
+    parent: ModuleDataItem | null   // parent file
+}
+
+interface SelectTop {
+    src: any,
+    sim: any
+}
+
+
+class ModuleTreeProvider implements vscode.TreeDataProvider<ModuleDataItem> {
+    treeEventEmitter: vscode.EventEmitter<ModuleDataItem>;
+    treeEvent: vscode.Event<ModuleDataItem>;
+
+    constructor() {
+        this.treeEventEmitter = new vscode.EventEmitter<ModuleDataItem>();
+        this.treeEvent = this.treeEventEmitter.event;
+
+        
+    }
+
+
+    getTreeItem(element: ModuleDataItem): vscode.TreeItem | Thenable<vscode.TreeItem> {
+        
+    }
+
+    getChildren(element?: ModuleDataItem | undefined): vscode.ProviderResult<ModuleDataItem[]> {
+        if (element) {
+            const name = element.name;
+            if (name === 'sim' || name === 'src') {
+                element.parent = null;
+
+            }
+        } else {
+
+        }
+    }
+
+    getParent(element: ModuleDataItem): vscode.ProviderResult<ModuleDataItem> {
+        
+    }
+
+    getTopModuleItemList(element: ModuleDataItem): ModuleDataItem[] {
+        
+    }
+}
\ No newline at end of file