Water leakage prevention structure for aqueduct expansion joint

The utility model discloses an aqueduct expansion joint leakproof structure which comprises two concrete blocks and a drainage mechanism, the number of the concrete blocks is two, the opposite sides of the two concrete blocks are movably provided with fixing frames, the opposite sides of the two fixing frames are provided with buffering mechanisms, and the tops of the concrete blocks are provided with installation mechanisms. Through the cooperation of a second mounting groove, a flow guide hole, a second positioning block and a flow guide groove, falling rainwater can be guided and shunted, part of rainwater is guided when the amount of rainwater is too large, and therefore the amount of rainwater permeating is reduced; through cooperation of the first spring, the first fixing frame, the mounting block, the limiting groove, the second spring, the second fixing frame and a spring piece, the expansion joint can be stably mounted, so that the expansion joint can be quickly mounted during mounting, the labor int