The invention belongs to coal mining underground mechanical equipment and specifically relates to a crushing machine for a cutting pick cylinder. The problem that a large-size crushing machine is difficult to work in a middle/small tunnel is solved. The structure comprises a box body, wherein a crushing bottom tank is arranged under the box body; a crushing device is arranged in the box body; the box body is divided into two cavities; a cutting head is arranged in one cavity; a motor is arranged in the other box body; a transition flange plate is arranged between lateral plates of the box body; height adjusting screw holes are arranged on the lateral plates; the transition flange plate is connected with the lateral plates through bolts; a supporting plate is arranged on one side of the box body; a plurality of triangular supports are arranged under the supporting plate; the motor and a speed reducer are penetrated through the holes of the transition flange plate; the motor is located above the supporting plate; and a spraying device is arranged above the cavity in which the cutting head is. The whole machine has the advantages of simple design structure, convenience in operation, excellent safety, small volume, light weight and 11.4-ton spare total weight. The crushing machine is low in working noise and stable in property and is suitable for middle/small mining well with soft coal and few gangues.