Vehicle tactical laser weapons are kinds of direct energy weapons that use high energy laser to destroy targets. The operational effectiveness of air defense system can be improved effectively with the vehicle tactical laser weapons, which have broad application prospects in field of air defense. The United States (US) has been leading the world in the development of laser weapons, especially in the field of vehicle tactical laser weapons, and many important progresses has been achieved. The development status and key technology of US Army vehicle tactical laser weapons were analyzed, and the characteristics and trends were summarized, which can provide reference for practical application of our laser weapons.