Abstract:  In the urban canyons and complex indoor environment, because the GPS signal is easily obscured and interference, so that often receives less than four satellites, especially in highly developed cities. But with people's daily activities scope expanding gradually, people want to anytime and anywhere, anytime to get its own location information. So, in order to solve this problem, this topic researchs the Global Positioning System (GPS), the Strapdown Inertial Navigation System (SINS) and the Wireless Location Technology (WLAN) in urban complex environment of indoor and outdoor location advantages and disadvantages, the SINS／GPS integrated navigation and positioning method based on Kalman filter loose combination is proposed in urban complex environment. In the indoor environment, the use of WLAN wireless location technology alone is vulnerable to the impact of complex indoor environment, suchas multipath effect caused by ceiling, wall and in the propagation process, it’s susceptible to interference of electrical appliances in the same band, etc. This paper proposes a SINS／WLAN based integrated navigation and positioning technology based on Kalman filter to achieve more smooth navigation and positioning results.At the same time, the integrated navigation system of high precision, low power consumption, miniaturization requirement, design the embedded navigation computer based on TMS320C6713 and FPGA architecture platform. Through the construction of the platform system, it can effectively help solve the problem of people demand for ubiquitous service in the location