In recent years, many cities have been severely affected by heavy rains, leaving the cities in bad condition. The cause of waterlogging in Wuhan is analyzed, which includes the influence of the extreme weather, the lagging drainage standard, the imperfection of pipe network system, the high hardening rate of the ground, the excessive construction sites and the reducing of the lakes. Then the countermeasures are proposed, which are improving the drainage standard, controlling and utilizing the rainwater source, upgrading the city drainage system, changing the hard ground trend of the city, preserving the natural water and establishing GIS database of the city drainage.