The invention discloses an air compressor with the high pressure capability. The air compressor comprises an air cylinder, a linkage rod, a box body, a front wind wheel and a rear wind wheel; a main shaft is connected in the box body; the front wind wheel and the rear wind wheel are fixed at the two ends of the main shaft; the air cylinder is made of aluminum; and a cooling fin is arranged outside the air cylinder. The wind conveying capacity is improved through structure arrangement of the cooling fin, the rear wind wheel and the linkage rod to improve the high pressure capability of the air compressor; the central height of the linkage rod is increased through the telescopic structure of the linkage rod, and then the swing angle of a connecting rod in moving is reduced, so that the air compression efficiency is improved; and meanwhile the cooling effect of the air compressor is guaranteed through the high cooling effect of the cooling fin, so that the air compression efficiency is improved.