Leak-proof breast pump

A leakage-proof breast pump comprises a breast pump main machine, a milk storage bin, a leakage-proof horn cover, a negative pressure bin and a one-way valve device, the rear end of the leakage-proof horn cover extends into the milk storage bin and is inserted into the negative pressure bin, one end of the negative pressure bin is connected with the breast pump main machine, and the other end of the negative pressure bin penetrates through the milk storage bin and forms a leakage-proof cavity with the leakage-proof horn cover. One end of the one-way valve device is communicated with the leakage-proof cavity, and the other end is positioned in the milk storage bin. When the anti-leakage milk bottle is used, milk can be blocked, and the anti-leakage effect is achieved. Meanwhile, the milk storage bin is better in sealing effect, convenient to detach and wash and more practical. And moreover, the negative pressure bin runs more smoothly, the situation of gaps is avoided, the sealing performance of equipment is e