Milk pumping sleeve for micro pump

The utility model relates to the technical field of medical supplies, in particular to a milk pumping sleeve for a micro pump, which comprises an injector and a filter tube, the liquid outlet end of the injector is communicated and connected with the filter tube through a first guide tube, a connecting tube is arranged on the side wall of the filter tube, one end of the connecting tube is communicated and connected with the filter tube, and the other end of the connecting tube is communicated and connected with the filter tube. A filter screen is arranged at the joint of the filter pipe and the connecting pipe; a second catheter is arranged at the end, away from the filter tube, of the connecting tube in a communicating mode, and the second catheter is used for being connected into a stomach tube; the first guide pipe is provided with a three-way switch valve, two ends of the three-way switch valve are respectively communicated with the first guide pipe, the other end of the three-way switch valve is provided