The invention discloses a Chinese medicinal material crushing machine. The Chinese medicinal material crushing machine comprises a base and a feeding box mounted at the top of the base. A feeding cavity is formed in the feeding box. A first rotary crusher is arranged in the feeding cavity. A crushing cavity is formed in the base and located at the bottom of the feeding box. The top of the crushingcavity communicates with the bottom of the feeding cavity. Second rotary crushers are arranged in the crushing cavity in a bilaterally symmetrical mode. A sliding connection cavity which extends leftwards is formed in the base and located at the bottom of the crushing cavity. A guiding connection groove is formed in the inner wall of the rear side of the sliding connection cavity. A screw which extends leftwards and rightwards is arranged in the guiding connection groove. The left extension tail of the screw is rotatably connected with the inner wall of the left side of the guiding connectiongroove in a matched mode. The right extension tail of the screw is connected with a first driver in a matched mode. The outer surface of the first driver is arranged in the inner wall of the right side of the guiding connection groove and is fixedly connected with the inner wall of the right side of the guiding connection groove. A sliding connection box is slidably connected into the sliding connection cavity. The Chinese medicinal material crushing machine is simple in structure, convenient to operate and high in safety, the medicinal material crushing quality and effect are improved, and the workload of operators is reduced.