Gear switch circuit, gear control system and vehicle

The utility model relates to a gear switch circuit, a gear control system and a vehicle. The gear switch circuit comprises a plurality of voltage division circuits, and the first ends of the voltage division circuits are used for accessing power supply voltage; the first end of each gear switch is grounded, and the second ends of the gear switches are correspondingly connected with the second ends of the voltage division circuits respectively; the input ends of the plurality of first NOT gates are connected with the third ends of the plurality of voltage division circuits in a one-to-one correspondence manner; the input end of the encoder circuit is connected with the output end of each first NOT gate, and a plurality of output ends of the encoder circuit are used for being connected with a vehicle-mounted instrument; wherein the number of the input ends of the encoder circuit is greater than the number of the output ends of the encoder circuit, and each output end of the encoder circuit is used for outputtin