Floor structure of building

The utility model provides a floor structure of building, interval region including the district at a distance from two interior spaces, interval region is last to be provided with waterproof paving layer structure, waterproof paving layer structure is including setting up at waterproof panel topmost, waterproof the sheet surface has the slope, waterproof paving layer structure inside is provided with waterproof boss, the top of waterproof boss is not less than the bottom surface of waterproof panel. The utility model discloses can realize futilely the isolation completely between the wet region, water leakage water phenomenon also can be stopped to appear oozing in long -time use, improves water -proof effects. Waterproof paving layer structure can only set up at interval region the department, and both ends are connected with the lateral wall of two interior spaces respectively, need not further to extend waterproof material's the length of laying, and the use amount of having saved waterproof material has