The utility model provides an automatic adjustment fan control device for a car and belongs to the technical field of the car. The automatic adjustment fan control device for the car solves the problem that in the prior art, usage of a traditional moving fan is limited inside the car because of inconvenient power supply and placement, and low intellectualization level. The automatic adjustment fan control device for the car includes a storage battery which is used for providing electric energy for the fan and a plurality of fan motors which enable the fan to rotate, and the automatic adjustment fan control device for the car further comprises a temperature control circuit and a switch circuit, wherein the temperature control circuit is used for controlling revolving speed of the fan motors according to an environment temperature and a switch circuit is used for achieving a parallel connection of the fan motors and a serial connection of the fan motors. The temperature control circuit is connected with the switch circuit, the storage battery provides electricity for the fan motors through the switch circuit which is connected with the plurality of fan motors. The temperature control circuit is further connected with an ignition switch. The automatic adjustment fan control device for the car is capable of automatically adjusting the revolving speed of the fan inside the car cabin according to changes of the environment temperature so as to achieve basic cooling over the interior of a car cabin.