Abstract:  BeiDou system is our self-developed GPS navigation system, which is used widely because of its excellent properties.After the Internet,the Internet of Things is the another major revolution in information technology.The indoor testing technology has developed in a relatively mature height.This paper analyzes the applicability of the BeiDou system in the the indoor environment testing based on the architecture of the Internet of Things.So that BeiDou system can serve the indoor environment testing better and we can develop the indoor environment testing with Chinese characteristics by using the method of unique innovation.