diff --git a/scripts/installation/INSTALLATION_GUIDE.md b/scripts/installation/INSTALLATION_GUIDE.md
index 03faf2abf..8a41bc47a 100644
--- a/scripts/installation/INSTALLATION_GUIDE.md
+++ b/scripts/installation/INSTALLATION_GUIDE.md
@@ -28,13 +28,13 @@ We provide platform-specific installation scripts:
 
 ```bash
 # Install with a specific source
-./install-qwen-with-source.sh --source github
+sh install-qwen-with-source.sh --source github
 
 # Install with internal source
-./install-qwen-with-source.sh -s internal
+sh install-qwen-with-source.sh -s internal
 
 # Show help
-./install-qwen-with-source.sh --help
+sh install-qwen-with-source.sh --help
 ```
 
 #### Supported Source Values:
@@ -51,6 +51,18 @@ We provide platform-specific installation scripts:
 3. It installs Qwen Code globally
 4. It creates `~/.qwen/source.json` with the specified source information
 
+#### Important Notes:
+
+⚠️ **After installation, you need to restart your terminal or run:**
+
+```bash
+source ~/.bashrc  # For bash users
+# or
+source ~/.zshrc   # For zsh users
+```
+
+This is required to load the newly installed Node.js and Qwen Code into your PATH.
+
 #### Prerequisites:
 
 - curl (for NVM installation and script download)
@@ -153,7 +165,7 @@ The `source.json` file contains:
 
 ### Verification
 
-After installation, you can verify the source information:
+After installation and restarting your terminal (or sourcing your shell configuration), you can verify the source information:
 
 **Linux/macOS:**
 
@@ -197,11 +209,8 @@ brew install qwen-code
 **Linux/macOS:**
 
 ```bash
-# Make script executable
-chmod +x install-qwen-with-source.sh
-
-# Run with bash explicitly
-bash install-qwen-with-source.sh --source github
+# Run with sh
+sh install-qwen-with-source.sh --source github
 ```
 
 **Windows (PowerShell as Administrator):**
@@ -218,7 +227,7 @@ bash install-qwen-with-source.sh --source github
 
 **Linux/macOS:**
 
-- Ensure NVM is installed: `curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.0/install.sh | bash`
+- Ensure NVM is installed: `curl -o- https://qwen-code-assets.oss-cn-hangzhou.aliyuncs.com/installation/install_nvm.sh | bash`
 - Restart your terminal or run: `source ~/.bashrc`
 
 **Windows:**
diff --git a/scripts/installation/install-qwen-with-source.sh b/scripts/installation/install-qwen-with-source.sh
index deb4124ec..50c667e25 100755
--- a/scripts/installation/install-qwen-with-source.sh
+++ b/scripts/installation/install-qwen-with-source.sh
@@ -101,8 +101,17 @@ install_qwen_code() {
 
     echo "Installing Qwen Code..."
 
-    # Install Qwen Code globally (may require sudo)
-    if sudo npm install -g @qwen-code/qwen-code >/dev/null 2>&1; then
+    # Check if running as root
+    if [ "$(id -u)" -eq 0 ]; then
+        # Running as root, no need for sudo
+        NPM_INSTALL_CMD="npm install -g @qwen-code/qwen-code"
+    else
+        # Not root, use sudo
+        NPM_INSTALL_CMD="sudo npm install -g @qwen-code/qwen-code"
+    fi
+
+    # Install Qwen Code globally
+    if $NPM_INSTALL_CMD >/dev/null 2>&1; then
         # Verify installation
         if command_exists qwen; then
             QWEN_VERSION=$(qwen --version 2>/dev/null || echo "unknown")
@@ -131,7 +140,18 @@ main() {
     echo "✓ Installation completed!"
     echo "==========================================="
     echo ""
-    echo "Run 'qwen' to start using Qwen Code"
+    
+    # Try to source the shell configuration file
+    if [ -f "$HOME/.zshrc" ]; then
+        echo "Loading zsh configuration..."
+        source "$HOME/.zshrc" 2>/dev/null || true
+    elif [ -f "$HOME/.bashrc" ]; then
+        echo "Loading bash configuration..."
+        source "$HOME/.bashrc" 2>/dev/null || true
+    fi
+    
+    echo "To use Qwen Code in new terminals, run: qwen"
+    echo "If 'qwen' command is not found, please restart your terminal."
 }
 
 # Run main function