Leakage-proof construction method combining tower crane foundation and basement floor

The invention discloses a leakage-proof construction method combining a tower crane foundation and a basement floor. The method comprises the following steps: excavating an earthwork groove and building a brick membrane along an inner wall of the earthwork groove, laying a waterproof material, distributing a foundation reinforcement cage, mounting supporting feet of a tower crane, mounting a grounding device, pouring concrete, mounting standard sections of the tower crane and the like. The leakage-proof construction method has the advantages that problems in a utilization process of the tower crane that the standard sections of a tower body are immersed in water for a long period to cause potential safety hazards including rusting and the like and the water is deposited in an installation position of the tower crane for a long period are effectively avoided, a dismounting procedure of the tower crane is simplified and the stability of connection between the earthwork groove and the basement floor is increased