The utility model provides an improved generation sand prevention municipal administration well lid structure belongs to municipal works equipment field. It has solved the problem that the difficulty was opened to present well lid. This improved generation sand prevention municipal administration well lid structure includes well seat and lid, well seat inner wall top is equipped with the ring channel, the lid lid closes on the ring channel, still include a plurality of bolts, the bolt including fix the key seat of lid bottom surface with insert the pin on the key seat, the pin rear end is equipped with the pull ring, be equipped with the draw hole on the pull ring, be equipped with on the lid and dismantle the hole, it is downthehole that the draw hole projection is located the dismantlement all the time, pin front end tip and be close to the rear end tip and do not be equipped with before stopper and rear stop block, and can precedingly promote the son, make rear stop block and key seat offset, make the pin front end support on bottom of the annular groove, this moment the lid top surface with well seat top surface parallel and level, also can wear to establish in the draw hole through the instrument, after draw the pin, the stopper offsets with the key seat before making, and make pin front end and bottom of the annular groove separate. This well lid structure can avoid gravel and sand to block, leads to opening the difficulty.