The invention relates to a high-impact hydraulic-pressure-resistant PVC (polyvinyl chloride) irrigation pipe which comprises the following raw materials: by weight, 100 parts of SG-5 type resin powder, 8-10 parts of light calcium carbonate, 2.0-2.4 parts of a calcium zinc composite stabilizer, 3-5 parts of ACR(acrylate modifier)-201, 5-7 parts of CPE(chlorinated polyethylene)-135A, 0.2-0.4 part of a compound lubricant, 0.6-0.9 parts of carbon black and 13-17 parts of alumina. The high-impact hydraulic-pressure-resistant PVC (polyvinyl chloride) irrigation pipe obtained by the invention meets the bearing performance, and meets the requirements of drop-hammer impact; at the same time, compared with a traditional formula, the high-impact hydraulic-pressure-resistant PVC (polyvinyl chloride) irrigation pipe solves the problems of pipe physical performance degradation caused by pipe ageing and low tendency to turn white for the reason that the pipe is affected by daylight and natural oxidation in the external environment, and no cost is increased.