The invention discloses a compound eye imitating structure sun sensor facing a microsatellite. The bottom surface of the compound eye imitating structure sun sensor serves as an installing basal plane, a chamfering pentakis hexecontahedron serves as a structure foundation, a half chamfering pentakis hexecontahedron is selected to serve as an installing body for solar battery pieces, and all the installed solar battery pieces form a solar battery piece array. The sensor further comprises a current collecting module, a current management module, an energy storage module, a calculation module and a wireless communication module connected with the calculation module. The current collecting module is connected with the solar battery piece array, and the wireless communication module transmits sun vector results calculated by the calculation module to a wireless receiving device of a satellite body. The high-reliability low-cost attitude measurement sensor is provided for the future microsatellite, technical support is provided for modular design and plug and play of the microsatellite, and thus quick integration and assembly of the microsatellite are achieved.