The invention discloses a microfluid pump. The microfluid pump comprises a pump body, wherein a cavity is formed in the pump body. The microfluid pump is characterized in that a blade is movably arranged in the cavity, a sealing space is formed between the end surface of the blade and at least one end of the pump body, a fluid inlet and a fluid outlet which communicate with the sealing space are respectively formed in the pump body on the same side as the blade, the fluid inlet is connected with a first check valve, the fluid outlet is connected with a second check valve, and a driving mechanism which is capable of driving the blade to translate back and forth in the cavity is arranged on the pump body. The microfluid pump has the advantages of simple structure, less noise and high fluid pumping efficiency.