Stainless steel magnetic pump is made up of pump, magnetic actuator and motor. The key component magnetic drive is composed of external magnetic rotor, internal magnetic rotor and non-magnetic isolation sleeve. When the external magnetic rotor is driven to rotate, the magnetic field can penetrate the air gap and non-magnetic material, and drive the internal magnetic rotor connected with the impeller to rotate synchronously. Because the pump shaft and the inner magnetic rotor are completely closed by the pump body and the isolation sleeve, the problem of"Running, leaking, dripping and leaking" is completely solved, the hidden danger of inflammable, explosive, poisonous and harmful medium leaking through pump seal in refinery chemical industry is eliminated, and the workers' physical and mental health and safe production are effectively guaranteed.