The utility model discloses an outdoor power supply adapter box. The device comprises a box body and a box cover, The box body is provided with a first cavity and a second cavity. wherein the first chamber is suitable for placing a storage battery; the second chamber is suitable for placing a wind driven generator for supplying power to the storage battery; an inner container is arranged in the first cavity; The box body is provided with a heat preservation and insulation plate suitable for covering the first cavity in a buckled mode. a box cover is arranged on the second cavity in a matched mode, fan-shaped shutters are arranged on the two opposite side walls of the box cover, rotating shafts of the fan-shaped shutters are hinged to one ends of pull rods, the other ends of the pull rods are connected with one ends of bimetallic strips, and the bimetallic strips deform to pull the pull rods when the temperature is lower than or higher than a set value, so that the rotating shafts rotate to drive the fan-shaped shutters to be closed or opened; The adapter box can solve the technical problems that in the prior art, the service life of the storage battery is shortened or discharging is too fast due to reasons such as temperature and humidity, and the storage battery cannot supply power reliably or cannot achieve expected efficiency due to faults of a wind power generation system.