To provide a gear shift control device and a gear shift control method, specifying the present position of a vehicle with high accuracy, performing automatic backward/forward switching of the vehicle or automatic parking for the purpose of parking, and improving convenience.

The present position information 102a of the vehicle is acquired by controlling a position detection section 10, and the vehicle speed information 30 of the vehicle is acquired by controlling a vehicle speed detection section 30. Based on the present position information 102a and vehicle speed information 102b, when it is determined that it is necessary to switch the forward/backward traveling of the vehicle, an automatic transmission is controlled to switch the backward/forward traveling of the vehicle.