The method only uses one satellite and one base station to implement the high accuracy positioning of the mobile terminal. The base station uses the angle of arrival (AOA)/ the time of arrival (TOA) positioning approach to get the two dimensional plan solution where the user end locates at; after finding the average height value of the area from the space database of GIS and calculating the clock difference between the base station and the mobile terminal, based on the GPS giving-time system, the base station figures out the clock difference between the mobile terminal and the satellite, and establishes the equation set by which the three dimensional space coordinator is solved out.