The utility model provides a plastic-pipe impact-resistance experimental machine with a mechanical partition-type secondary impact capture and recovery function, belonging to the technical field of building material experimental testing devices. The plastic-pipe impact-resistance experimental machine with the mechanical partition-type secondary impact capture and recovery function comprises a vertical rack, a vertical sliding rod, a cone-shaped hook partition drop hammer lifting mechanism, a drop hammer, a base lifting device and a secondary-impact-prevention device. The vertical sliding rod is mounted on the vertical rack, the cone-shaped hook partition drop hammer lifting mechanism is fixed onto the vertical sliding rod, and the drop hammer is sleeved on the cone-shaped hook partition drop hammer lifting mechanism. The secondary-impact-prevention device comprises a mechanical-power-type secondary impact capture mechanism and a mechanical-power-type secondary impact recovery mechanism, the secondary impact capture mechanism is mounted on the inner side of the lower portion of the rack, and the secondary impact recovery mechanism is mounted on the inner side of the upper portion of the rack, and the secondary impact capture mechanism and the secondary impact recovery mechanism is connected through a string. A function of an existing electronic-type device is replaced by lifting the drop hammer through manual operation and then utilizing a mechanical linkage to flexibly prevent drop hammer secondary impacts. The plastic-pipe impact-resistance experimental machine with the mechanical partition-type secondary impact capture and recovery function has the advantages of simplicity in structure, convenience in operation, inexpensive price, small size, low weight and the like, and can be widely applied to radial impact-resistance tests for plastic pipes of PVC (poly vinyl chloride) and PE (poly ethylene).