The invention discloses an efficient grinding machine special for sliding blocks. The efficient grinding machine special for the sliding blocks comprises a rodless air cylinder driving feeding system,a feeding system, a grinding system, a pushing system and a discharging system. The efficient grinding method for the sliding blocks comprises the steps of feeding, conveying, machining, pushing anddischarging. According to the grinding machine special for the sliding blocks, the automation technology is adopted, feeding, grinding and discharging are all completed automatically, and compared with a traditional machining mode, the efficiency is improved by 10-12 times; the grinding system adopts a high-strength grinding wheel, grinding and rough and fine grinding are completed at a time in afree state in a brand-new hydraulic motor chain type driving mode, meanwhile, the surface roughness of a finished product is higher, the precision is higher, the yield is higher, the efficiency and quality are truly improved, meanwhile, due to the fact that the machining efficiency is greatly improved, the number of machines is reduced, the one-time investment is saved, and the economic benefit isgreatly improved.