Wearable breast pump

A wearable breast pump, comprising:

• a breast pump principal machine and a breast pump container connected with each other detachably, wherein
• the breast pump container includes a milk bottle and a breast suction shield connected with each other,
• the breast suction shield includes an absorption portion, a mating portion, and a suction portion that are integrated together,
• the absorption portion is used to fit with a breast, the mating portion is used to connect to the breast pump principal machine, to form a sealing chamber between the breast pump principal machine and the suction portion, the suction portion is used to expand when the sealing chamber is under a negative pressure, to suck milk,
• a one-way sealing ring is provided on an end surface of the mating portion that faces the suction portion, the one-way sealing ring surrounds an outer side of the suction portion,
• the one-way sealing ring includes an abutting portion and a floated portion protruding from the end surface of the suction portion,
• the abutting portion is located between the floated portion and the suction portion, an end surface of the abutting portion that faces the breast pump principal machine is a plane, which is used to fit with the breast pump principal machine,
• across section of the floated portion is an oblique triangle, and a top point of the triangle is inclined toward the breast pump principal machine, and an angle is formed between a side edge of the triangle adjacent to the mating portion and an end surface of the mating portion.