diff --git a/ant-condition-fail-build.sh b/ant-condition-fail-build.sh
new file mode 100644
index 0000000000000000000000000000000000000000..c4ad44ff073418aca8ac86503b2bf6494f6fc485
--- /dev/null
+++ b/ant-condition-fail-build.sh
@@ -0,0 +1,84 @@
+#!/bin/bash
+###############################################################################
+# @用例ID: 20260405-232654-173528830
+# @用例名称: ant-condition-fail-build
+# @用例级别: 3
+# @用例标签: ant
+# @扩展属性:
+# @用例类型: 功能测试
+# @自动化: 1
+# @超时时间: 0
+# @用例描述: 验证 ant 构建脚本中的 fail 条件触发后命令返回失败
+###############################################################################
+if [ -z "$TST_TS_TOPDIR" ]; then
+    TST_TS_TOPDIR="$(realpath "$(dirname "$0")/..")"
+    while [ "$TST_TS_TOPDIR" != "/" ]; do
+        [ -f "${TST_TS_TOPDIR}/tsuite" ] && break
+        TST_TS_TOPDIR="$(dirname "$TST_TS_TOPDIR")"
+    done
+    export TST_TS_TOPDIR
+fi
+source "${TST_TS_TOPDIR}/common/lib/common.sh" || exit 1
+###############################################################################
+
+g_tmpdir="$(mktemp -d)"
+g_buildfile="$g_tmpdir/build.xml"
+g_marker_file="$g_tmpdir/should_not_exist.txt"
+
+tc_setup() {
+    msg "this is tc_setup"
+
+    # @预置条件: 安装软件包
+    msg "CHECK: 安装 ant 软件包的命令即将执行, 实际值=ant"
+    assert_true yum install -y ant
+
+    # @预置条件: 创建包含条件 fail 逻辑的 Ant 构建文件
+    cat > "$g_buildfile" <<EOF
+<project name="fail-condition-test" default="verify" basedir=".">
+    <target name="verify">
+        <condition property="must.fail">
+            <equals arg1="yes" arg2="yes"/>
+        </condition>
+        <fail if="must.fail" message="intentional failure triggered"/>
+        <echo file="$g_marker_file">unexpected success</echo>
+    </target>
+</project>
+EOF
+
+    return 0
+}
+
+do_test() {
+    msg "this is do_test"
+
+    # @测试步骤: 执行包含 fail 条件的 verify 目标
+    # @预期结果: ant 命令执行失败，退出码非 0
+    ant -f "$g_buildfile" verify > "$g_tmpdir/ant.out" 2>&1
+    ret=$?
+    msg "CHECK: 执行 ant verify 的退出码, 实际值=$ret"
+    assert_false [ $ret -eq 0 ]
+
+    # @测试步骤: 检查 fail 触发后后续 echo 是否未执行
+    # @预期结果: 标记文件不存在
+    msg "CHECK: 标记文件是否不存在, 实际值=$([ -f "$g_marker_file" ] && echo 存在 || echo 不存在)"
+    assert_true test ! -f "$g_marker_file"
+
+    # @测试步骤: 检查输出中不应出现 BUILD SUCCESSFUL
+    # @预期结果: 输出不包含 BUILD SUCCESSFUL
+    grep -q -i "BUILD SUCCESSFUL" "$g_tmpdir/ant.out"
+    ret=$?
+    msg "CHECK: ant 输出不应包含 BUILD SUCCESSFUL, 实际值=$ret"
+    assert_true [ $ret -ne 0 ]
+
+    return 0
+}
+
+tc_teardown() {
+    msg "this is tc_teardown"
+    rm -rfv "$g_tmpdir" || return 1
+    return 0
+}
+
+###############################################################################
+tst_main "$@"
+###############################################################################