MGJ miniature guided compact pneumatic cylinder has compact structure, small size, no space occupied for installation, and can be installed in some narrow space positions; it can be fixed and installed by screw from the bottom or side of the cylinder, which is convenient to install; the guide rod is thick and has strong transverse load resistance, and can withstand large transverse load, which can be used for the launching and lifting of workpieces on the conveyor line, etc. Structural, strong torque resistance.