The invention provides a cooling mute magnetic circulating pump. The magnetic circulating pump comprises a pump cover, an impeller assembly, a pump cavity assembly, an outer rotor assembly and a motorassembly, wherein the impeller assembly comprises a rubber cap, a ceramic sheet, a shaft sleeve, an impeller, an inner magnetic ring and a ceramic shaft. The pump cavity assembly comprises a seal ring, a pump cavity and a cooling pipe sealing cap. The outer rotor assembly comprises a left-handed nut, an outer magnetic ring and an outer magnetic ring seat. The motor assembly comprises a nut, a pump seat, a protective rubber sleeve, a motor, a cooling pipe, a pump cover and a base. The cooling mute magnetic circulating pump is simple and reasonable in structure, easy to manufacture, convenientto install, small in noise, good in cooling effect, sealing performance and reliability and stable in operation.