Device for improving reproductive rate of meat donkeys through freezing artificial insemination and operation method

The invention discloses a device for improving the reproductive rate of the meat donkeys through freezing artificial insemination. A first placing frame, a first cover plate, a second placing frame, asecond cover plate and a containing device are provided, and a freezing tube can be vertically placed; by arranging a limiting and fixing structure, on one hand, the freezing tube can be further fixed in position, and stability of the freezing tube can be improved in the freezing operation; on the other hand, through a limiting cylinder, a second extrusion spring and an extrusion sheet which arearranged in the device, an extrusion auxiliary sealing effect is achieved on the sealing position of the tube opening of the freezing tube, and by means of the operation method for improving the meatdonkey reproduction rate through freezing artificial insemination, sealing reduction caused by thermal expansion and cold contraction can be avoided, so that the normal proceeding of freezing work isensured, the freezing work q