Milking device for dairy cow

The utility model discloses a milking device for a dairy cow. The milking device for the dairy cow comprises a milking cup, a milk outlet main pipeline, a milk tank and an inflation and deflation pump. Two expansible air bags are arranged in an inner cavity of the milking cup. The expansible air bags are arranged in the axial direction of the inner wall of the milking cup. A dairy cow breast squeezing space is formed between the two expansible air bags. The end of the milk squeezing cup is communicated with an opening of one end of the milk outlet main pipeline in a sealed mode. An opening of the other end of the milk outlet main pipeline is communicated with the milk tank. An inner pipeline of the milk outlet main pipeline is communicated with the milk cow breast squeezing space. The two expansible air bags are communicated with the inflation and deflation pump in a sealed mode through corresponding respective air pipelines. The inflation and deflation pump is used for inflating and deflating the expansible air bags. According to the milking device for the dairy cow, the two expansible air bags are arranged in the inner cavity of the milking cup, the inflation and deflation pump inflates and deflates the two expansible air bags synchronously through the inflation and deflation pump, the breasts of the dairy cow is guarnteed, and the milking efficiency is improved.