Positive and negative pressure sucking-like breast pump

The utility model relates to a positive and negative pressure sucking-imitating breast pump which comprises a bra, the bra comprises a trumpet-shaped cup, the small end of the cup is connected with a communicating pipe, the bottom end of the communicating pipe is connected with a base used for installing a milk storage device, a guide pipe communicated with the communicating pipe is arranged in the base, and a sucking body of a flexible hollow structure is arranged in the cup. The sucking body is communicated with the massage mouthpiece, and the communicating pipe is communicated with the milk sucking mouthpiece; the breast pump main machine comprises a shell, at least one gas circuit unit is arranged in the shell and connected with a gas connector on the main machine, and a controller is arranged and electrically connected with the battery and the gas circuit unit. And the massage mouthpiece and the breast suction mouthpiece of the bra are respectively communicated with the air interface through a connecting