The utility model provides a bunched type pneumatic cylinder, includes the cylinder body, is equipped with a plurality of sub - pneumatic cylinders in the cylinder body, and sub - pneumatic cylinder is the piston structure, and the tip of piston rod is equipped with the magnetic substance, sets up the sensor in the cylinder body, sensor induced magnetism gonosome, neat setting is held level with both hands with the moving distance's of piston rod initiating terminal and end respectively in the both ends of sensor, and the length direction of sensor is parallel with the moving distance orientation of piston rod. The utility model discloses can realize the collaborative work of multichannel pneumatic cylinder.