Motorcycle front shock absorber with good oil leakage prevention effect

The motorcycle front shock absorber with the good oil leakage prevention effect comprises an aluminum cylinder, a front fork pipe is arranged on the lower portion in the aluminum cylinder in a sleeved mode, a gasket, an oil seal sealing ring and a plastic dust cover are sequentially arranged on the inner side of the bottom of the aluminum cylinder from top to bottom in a sleeved mode, and an oil seal clamping spring is arranged below the oil seal sealing ring. A first annular groove and a second annular groove are formed in the upper portion and the lower portion of the inner side of the oil seal sealing ring respectively, a lower piston seat is installed at the bottom end of the front fork pipe, a lower piston seat cover is installed on the inner side of the lower piston seat, an adjusting ejector pin is arranged in the lower piston seat cover in a sleeved mode, and a first leakage-proof rubber ring is arranged on the outer side of the lower piston seat in a sleeved mode. The outer side of the lower piston s