Engineering building design roof cornice waterproof device

The utility model relates to the technical field of engineering building design, and particularly discloses a roof cornice waterproof device for engineering building design, which comprises a roof and a cornice, and is characterized in that a water leakage opening is formed in the cornice, a water storage tank is fixedly mounted below the cornice, a water inlet of the water storage tank is communicated with the water leakage opening, and a water outlet of the water storage tank is communicated with the cornice. A water pump is fixedly mounted at the bottom of the water storage tank, a connecting pipe is arranged below the water pump, the water pump is communicated with the water storage tank and the connecting pipe, a filter tank is arranged on the connecting pipe, a filter screen is arranged at the bottom of the filter tank, and a water outlet pipe is arranged at the position, below the filter screen, of the filter tank. Compared with a traditional roof cornice waterproof device, impurities accumulated on th