diff --git a/packaging/tools/install.sh b/packaging/tools/install.sh
index 6e64d77525f33c41b1c0af05ab624f9d15bdbf43..02ceeb883fce20e698cbf9bebf8f2a18b49dea0d 100755
--- a/packaging/tools/install.sh
+++ b/packaging/tools/install.sh
@@ -211,8 +211,8 @@ function install_bin() {
   [ -x ${install_main_dir}/bin/${clientName} ] && ${csudo}ln -s ${install_main_dir}/bin/${clientName} ${bin_link_dir}/${clientName} || :
   [ -x ${install_main_dir}/bin/${serverName} ] && ${csudo}ln -s ${install_main_dir}/bin/${serverName} ${bin_link_dir}/${serverName} || :
   [ -x ${install_main_dir}/bin/${adapterName} ] && ${csudo}ln -s ${install_main_dir}/bin/${adapterName} ${bin_link_dir}/${adapterName} || :
-  [ -x ${install_main_dir}/bin/${benchmarkName} ] && ${csudo}ln -s ${install_main_dir}/bin/${benchmarkName} ${bin_link_dir}/${demoName} || :
-  [ -x ${install_main_dir}/bin/${benchmarkName} ] && ${csudo}ln -s ${install_main_dir}/bin/${benchmarkName} ${bin_link_dir}/${benchmarkName} || :
+  [ -x ${install_main_dir}/bin/${benchmarkName} ] && ${csudo}ln -sf ${install_main_dir}/bin/${benchmarkName} ${bin_link_dir}/${demoName} || :
+  [ -x ${install_main_dir}/bin/${benchmarkName} ] && ${csudo}ln -sf ${install_main_dir}/bin/${benchmarkName} ${bin_link_dir}/${benchmarkName} || :
 #  [ -x ${install_main_dir}/bin/${dumpName} ] && ${csudo}ln -s ${install_main_dir}/bin/${dumpName} ${bin_link_dir}/${dumpName} || :
   [ -x ${install_main_dir}/bin/TDinsight.sh ] && ${csudo}ln -s ${install_main_dir}/bin/TDinsight.sh ${bin_link_dir}/TDinsight.sh || :
   [ -x ${install_main_dir}/bin/remove.sh ] && ${csudo}ln -s ${install_main_dir}/bin/remove.sh ${bin_link_dir}/${uninstallScript} || :
@@ -767,6 +767,34 @@ function is_version_compatible() {
   esac
 }
 
+deb_erase() {
+  confirm=""
+  while [ "" == "${confirm}" ]; do
+    echo -e -n "${RED}Existing TDengine deb is detected, do you want to remove it? [yes|no] ${NC}:"
+    read confirm
+    if [ "yes" == "$confirm" ]; then
+      ${csudo}dpkg --remove tdengine ||:
+      break
+    elif [ "no" == "$confirm" ]; then
+      break
+    fi
+  done
+}
+
+rpm_erase() {
+  confirm=""
+  while [ "" == "${confirm}" ]; do
+    echo -e -n "${RED}Existing TDengine rpm is detected, do you want to remove it? [yes|no] ${NC}:"
+    read confirm
+    if [ "yes" == "$confirm" ]; then
+      ${csudo}rpm -e tdengine ||:
+      break
+    elif [ "no" == "$confirm" ]; then
+      break
+    fi
+  done
+}
+
 function updateProduct() {
   # Check if version compatible
   if ! is_version_compatible; then
@@ -779,6 +807,13 @@ function updateProduct() {
     echo "File ${tarName} does not exist"
     exit 1
   fi
+
+  if echo $osinfo | grep -qwi "centos"; then
+    rpm -q tdengine 2>&1 > /dev/null && rpm_erase tdengine ||:
+  elif echo $osinfo | grep -qwi "ubuntu"; then
+    dpkg -l tdengine 2>&1 |grep ii > /dev/null && deb_erase tdengine ||:
+  fi
+
   tar -zxf ${tarName}
   install_jemalloc