The utility model discloses a solar GPS receiver suitable for a GPS-RTK mobile station. The GPS receiver comprises a GPS receiver shell, a GPS receiver mainboard, a power supply adjusting module, a solar cell panel, a display screen, a humidity sensor and an illumination sensor, the power supply adjusting module comprises a microcontroller, a charging protection circuit, a first relay, a voltage stabilizing circuit and a storage battery. A second relay is connected in series in a loop where the lithium battery supplies power to the GPS receiver mainboard, the first relay and the second relay are both connected with the output end of the microcontroller, and the humidity sensor and the illumination sensor are both connected with the input end of the microcontroller. According to the utilitymodel, the GPS receiver of the existing GPS-RTK mobile station is modified; the solar cell panel is used for receiving solar energy and converting the solar energy into electric energy to continuously supply power to the GPS receiver, meanwhile, environmental data are collected through the humidity sensor and the illumination sensor, switching of power supply modes is facilitated, and the troublethat a measuring worker frequently replaces a battery in field surveying and mapping work is solved.