diff --git a/copier-template/app.cmd.jinja b/copier-template/app.cmd.jinja
index 4f3e240..3fb1484 100644
--- a/copier-template/app.cmd.jinja
+++ b/copier-template/app.cmd.jinja
@@ -5,6 +5,13 @@ set "SCRIPT_DIR=%~dp0"
 set "ROOT_DIR=%SCRIPT_DIR%"
 pushd "%ROOT_DIR%" >nul
 
+set "PROJECT_VENV=%ROOT_DIR%.venv"
+if defined VIRTUAL_ENV (
+  if /I not "%VIRTUAL_ENV%"=="%PROJECT_VENV%" (
+    if /I not "%VIRTUAL_ENV%"=="%PROJECT_VENV%\" set "VIRTUAL_ENV="
+  )
+)
+
 set "COMMAND=%~1"
 if "%COMMAND%"=="" set "COMMAND=help"
 shift /1
diff --git a/copier-template/app.sh.jinja b/copier-template/app.sh.jinja
index ea8f187..6526721 100644
--- a/copier-template/app.sh.jinja
+++ b/copier-template/app.sh.jinja
@@ -4,6 +4,15 @@ set -eu
 ROOT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
 cd "$ROOT_DIR"
 
+PROJECT_VENV="$ROOT_DIR/.venv"
+case "${VIRTUAL_ENV:-}" in
+  ""|"$PROJECT_VENV"|"$PROJECT_VENV/")
+    ;;
+  *)
+    unset VIRTUAL_ENV
+    ;;
+esac
+
 show_help() {
   cat <<'EOF'
 {{ project_name }} 项目脚本
diff --git a/scripts/iti.cmd b/scripts/iti.cmd
index 9369743..166b68a 100644
--- a/scripts/iti.cmd
+++ b/scripts/iti.cmd
@@ -4,6 +4,14 @@ setlocal enabledelayedexpansion
 set "SCRIPT_DIR=%~dp0"
 set "ROOT_DIR=%SCRIPT_DIR%.."
 pushd "%ROOT_DIR%" >nul
+set "ROOT_DIR=%CD%"
+
+set "PROJECT_VENV=%ROOT_DIR%\.venv"
+if defined VIRTUAL_ENV (
+  if /I not "%VIRTUAL_ENV%"=="%PROJECT_VENV%" (
+    if /I not "%VIRTUAL_ENV%"=="%PROJECT_VENV%\" set "VIRTUAL_ENV="
+  )
+)
 
 set "COMMAND=%~1"
 if "%COMMAND%"=="" set "COMMAND=help"
diff --git a/scripts/iti.sh b/scripts/iti.sh
index 296094f..37be132 100644
--- a/scripts/iti.sh
+++ b/scripts/iti.sh
@@ -4,6 +4,15 @@ set -eu
 ROOT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
 cd "$ROOT_DIR"
 
+PROJECT_VENV="$ROOT_DIR/.venv"
+case "${VIRTUAL_ENV:-}" in
+  ""|"$PROJECT_VENV"|"$PROJECT_VENV/")
+    ;;
+  *)
+    unset VIRTUAL_ENV
+    ;;
+esac
+
 show_help() {
   cat <<'EOF'
 iTi-Flask 开发脚本