Fixed-distance pit digging device for tea tree planting

The utility model discloses a fixed-distance pit digging device for tea tree planting, which comprises a machine body, a supporting plate is fixedly mounted on one side of the machine body, a first motor is fixedly mounted on the top of the supporting plate, a bidirectional screw rod is fixedly mounted on an output shaft of the first motor, the bidirectional screw rod penetrates through the machine body, and a driving device is fixedly mounted on the machine body. Mounting groove frames are symmetrically connected to positive and negative threads of the two-way lead screw in a threaded mode, a first mounting plate is fixedly mounted in the machine body, and the two mounting groove frames penetrate through the first mounting plate at the same time; the distance between two drilling pits is controlled by controlling the distance between the two vertical plates through mutual cooperation of the first motor, the vertical plates, the graduated scale, the two-way lead screw, the drilling rod and other assemblies, a