The invention puts forward a verification method and system for a vertical returning vehicle landing period differential satellite navigation experiment, and belongs to the technical field of navigation. The verification method for the vertical returning vehicle landing period differential satellite navigation experiment adopts a navigation receiver, a common measurement antenna and a radio station to set up a ground temporary base station; a satellite navigation receiver carried by a rotor craft, an aerial survey antenna and a radio station are used for simulating the landing period flight ofthe vertical returning vehicle; through the ground temporary base station, a differential correction amount is calculated and is sent to navigation equipment on the rotor craft to be subjected to satellite navigation differential solution; through an external measurement device, field calibration is carried out; and through two high-speed cameras, the practical flight trajectory of the rotor craft is measured for checking differential satellite navigation accuracy. The verification method has the characteristics of being simple, low in cost and high in reliability.