The utility model provides a connecting piece for solenoid valve and actuating mechanism, connecting piece are the tubulose, and a tip of connecting piece is equipped with the gas thread, and another tip of connecting piece is precious tower head, and the position department of being close to the screw on the connecting piece is equipped with convex fastening cap. The utility model discloses can satisfy the operation requirement of on -the -spot pneumatic valve, solenoid valve, can resist the corruption of on -the -spot acid mist, dust, lengthen life, can export the pipe diameter size according to the solenoid valve, the preparation is applicable to the pneumatic connecting piece of various solenoid valves, and the tuber pipe connector adopts precious tower head's connected mode, firmly be difficult for coming off, the utility model discloses simple structure, practicality, installation, dismantlement make things convenient for, the life cycle is long.