Abstract: Based on in-depth research of power-enhancement of domestic and international navigation satellites, this paper analyzed the coverage areas of GEO satellites’ antenna beam under different angles of elevation. On the basis of analysis and demonstration of power-enhanced technology and program, this paper mainly discussed the power-enhanced signal’s coverage areas of our global navigation satellite. It gave out simulations of ground receiving power and antenna beam coverage, under different power-enhancement requirements of 10dB, 15dB, 20dB, 25dB. It gave out constraints of power-enhanced requirements to navigation satellites. It proposed suggestions to power-enhanced implementations of Chinese global navigation satellites, finally. Combined with the status of our navigation satellite system, it compared Chinese global navigation satellites to GPSIII at ground receiving signal, coverage areas of power-enhanced, achievement difficulty of power-enhancement, Doppler collision problem. It summarized the paper and gave out the conclusions, finally.