Underground water monitoring well protecting cover

The embodiment of the utility model discloses an underground water monitoring well protecting cover, and particularly relates to the technical field of monitoring well protecting covers, which comprises a mounting plate, a first pipe body is fixedly arranged on the right side of the top end of the mounting plate, the left end of the mounting plate is fixedly communicated with a second pipe body, and the second pipe body covers the top of a monitoring well and is communicated with the inside of the monitoring well. Ground cones are arranged at four corners in the mounting plate; the bottom end of the ground cone penetrates through the mounting plate and extends out of the bottom end of the mounting plate, and a moving mechanism for driving the ground cone to move is arranged in the mounting plate; the moving mechanism comprises a threaded cylinder in threaded connection with the outer end of the ground cone, the top end of the threaded cylinder is movably connected with the inner wall of the top end of the mou