The invention discloses an antiaircraft gun hail-preventing and precipitation-increasing projectile time detonating fuze with a centrifugal self-destruction function. The antiaircraft gun hail-preventing and precipitation-increasing projectile time detonating fuze comprises an upper body, a chamber interior ignition mechanism, a gunpowder timing mechanism, a centrifugal self-destruction mechanism,a ball rotor safety and arming mechanism, a fuze body, a detonating tube and a booster tube; the chamber interior ignition mechanism is located on the upper part of the upper body; the gunpowder timing mechanism achieving a timed detonating function is located between the chamber interior ignition mechanism and the centrifugal self-destruction mechanism; the rear end of the centrifugal self-destruction mechanism tightly presses the ball rotor safety and arming mechanism, and thus the ball rotor safety and arming mechanism cannot rotate; the front end of the detonating tube is adjacent to theball rotor safety and arming mechanism; and the front end of the booster tube is adjacent to the rear end of the detonating tube, and the rear end of the booster tube serves as a fuze output end to beused for detonating charged explosives, containing a silver iodide grain, in a projectile. The antiaircraft gun hail-preventing and precipitation-increasing projectile time detonating fuze has the centrifugal self-destruction function, the dud rate can be greatly decreased, and safety is good.