The invention discloses a high-efficiency air compressor. The high-efficiency air compressor comprises a cylinder. A containing space is arranged in the cylinder. The cylinder is provided with a first air inlet hole, a second air inlet hole, a third air inlet hole, a first air outlet hole, a second air outlet hole and a third air outlet hole. A first substrate and a second substrate are driven by magnetic fields generated by a first coil, a second coil, a third coil and a fourth coil to vertically move, air compression is conducted, and power conversion between traditional mechanisms is not needed. Friction is small, the structure is simple, noise is low, and the cost is reduced.