The invention discloses a method for automatically retrieving water collecting ports of a water drainage pipe network within waterlogging areas and relates to the technical field of data processing. The method includes the following steps of meshing the waterlogging areas; generating meshed waterlogging accumulated water depth information on the basis of rainfall forecasting data, terrain data, ground surface runoff data and drainage pipe network data; forming the waterlogging areas by connecting multiple grids the accumulated water depth of which exceeds a preset value; after data of the waterlogging areas are overlapped with layer data of the drainage pipe network, retrieving the water collecting ports within the waterlogging areas. Fast finding of the water collecting ports in a waterlogging disposition process is achieved, the drainage condition within the drainage pipe network can be checked, and therefore targeted disposition measures are taken.