Traditional Chinese medicine decoction piece processing device capable of conveniently adjusting cutting position and processing method

The invention discloses a traditional Chinese medicine decoction piece processing device capable of conveniently adjusting a cutting position, and relates to the technical field of traditional Chinese medicine decoction piece processing. A first motor is arranged on the left side of the fixing table and connected with a first gear shaft, the first gear shaft is meshed with a crawler belt, the right side of the crawler belt is meshed with a third gear shaft, outer boxes are arranged on the front side and the rear side of the fixing table respectively, and second motors are arranged on the left sides of the interiors of the outer boxes and connected with first lead screws. The first lead screw and the second lead screw are in threaded connection, and a fixing mechanism is arranged at the top of the crawler belt; a connecting rod is arranged at the top of the first lead screw, the top of the connecting rod is connected with the device box, and a third motor is arranged on the left side in the device box and conn