The invention discloses an anti-blocking well lid for a
sponge city. The anti-blocking well lid comprises a well body, wherein a well lid body is welded and fixed to the well body, a water guide opening is formed in the well lid body and penetrates through the well lid body, a straight rod is slidably connected to the center of the well lid body and penetrates through the well lid body, a
metal plate is welded and fixed to the end, located above the well lid body, of the straight rod and abuts against the surface of the well lid body, a piezoelectric medium is arranged in the
metal plate, a battery is arranged in the well lid body, and the piezoelectric medium communicates with the battery through a wire. The anti-blocking well lid has the advantages that when the water guide opening is blocked, the
water level rises, thus water enters a box through a water inlet
pipe, the straight rod rises, a trigger switch is started, a water pump is started, garbage is washed away, and the water drainage efficiency is ensured; and by utilizing the characteristic that the environment temperature is too high in summer, a liquid bag expands, thus the straight rod rises,
water flow is sprayed out from a water drainage
pipe, and thus the pavement is cooled.