Abstract: Based on natural topography and urban characteristics, the Quasi-Zenith Satellite System (QZSS) has been basically built, with providing positioning enhancement services based on GPS. This paper introduces services and applications about QZSS, and gives the analysis of its signals, featured services, application modes and recommended product lists. QZSS promotes the use of terminal equipments, with taking advantages of manufacturing digital cameras and sport watches. Also, CLAS are expanded in industries such as railway, precision agriculture and construction. Those have certain reference meaning for promoting the applications of BeiDou Navigation Satellite System.