diff --git a/install.sh b/install.sh
index be8739d..53037c2 100755
--- a/install.sh
+++ b/install.sh
@@ -55,21 +55,28 @@ install_go() {
 download_singularity() {
     if [ ! -f "$SINGULARITY_ARCHIVE" ]; then
         wget -O "$SINGULARITY_ARCHIVE" "$SINGULARITY_URL"
-    fi
-    if [ ! -d "$SINGULARITY_DIR" ]; then
-        echo "Creating directory: $SINGULARITY_DIR"
-        mkdir "$SINGULARITY_DIR"
-        echo "Extracting archive: $SINGULARITY_ARCHIVE to $SINGULARITY_DIR"
-        tar -xzf "$SINGULARITY_ARCHIVE" -C "$SINGULARITY_DIR" --strip-components=1
         if [ $? -ne 0 ]; then
-            echo "Failed to extract $SINGULARITY_ARCHIVE"
+            echo "Failed to download $SINGULARITY_ARCHIVE"
             exit 1
         fi
-    else
-        echo "$SINGULARITY_DIR already exists, skipping extraction."
+    fi
+
+    if [ -d "$SINGULARITY_DIR" ]; then
+        echo "Removing existing directory: $SINGULARITY_DIR"
+        rm -rf "$SINGULARITY_DIR"
+    fi
+    
+    echo "Creating directory: $SINGULARITY_DIR"
+    mkdir "$SINGULARITY_DIR"
+    echo "Extracting archive: $SINGULARITY_ARCHIVE to $SINGULARITY_DIR"
+    tar -xzf "$SINGULARITY_ARCHIVE" -C "$SINGULARITY_DIR" --strip-components=1
+    if [ $? -ne 0 ]; then
+        echo "Failed to extract $SINGULARITY_ARCHIVE"
+        exit 1
     fi
 }
 
+
 # 编译和安装 singularity
 compile_singularity() {
     cd "$SINGULARITY_DIR"