A magnetic force differential stirring pump is disclosed. The pump comprises a driving shaft, a driving magnetic cylinder and a driven magnetic cylinder. The driving magnetic cylinder sleeves the driven magnetic cylinder, and magnetic poles are arranged in a centrosymmetric and one-to-one correspondence manner to form a centrosymmetric arrangement structure. The driving shaft connects the driving magnetic cylinder, and the driven magnetic cylinder is connected to an impeller in a stirring chamber and achieves sealing through flange connection. A stainless steel separating cover is disposed between the driving magnetic cylinder and the driven magnetic cylinder for sealing and separation, but magnetic force can pass through the stainless steel separating cover to achieve magnetic force transferring. The stainless steel separating cover is provided with a central shaft, a bearing and a snap ring to fix the moving parts and allow the moving parts to rotate freely. The pump is simple in structure and high in practicability. A fluid output by the pump has characteristics of pulsation and vibrating. Surprising new functions and characteristics can be achieved through accurate using. The pump can replace some traditional stirrers because of advantages on the structure and the cost. A dynamic seal of a transmission shaft is turned into a reliable static seal so that the pump has a function of completely avoiding transmission shaft leakage.