To　find　out　the　related　factors　affecting　the　underground　complex　spatial　way-finding,　through　the　spatial　way-finding　experiment　of　Beijing　77th　street　in　Xidan　underground　complex,　the　way-finding　process　of　the　users　was　tracked.　The　cognitive　map　was　drew　and　the　users＇　way-finding　feeling　was　interviewed,　and　difficulty　and　key　point　of　the　users　in　the　way-finding　process　were　mastered.　Analysis　shows　that　layout　irregular　vertical　space　is　one　of　the　important　causes　for　way-finding　difficulty,　and　space　environmental　cues　design　can　be　one　of　the　most　important　means　used　as　the　spatial　way-finding.