The invention relates an intelligent urban flood early warning management system. The core sensing device of the flood early warning management system is installed in a protective cover; the lower end of the protective cover is connected with a drainage pipeline through a trapezoidal clamping opening; according to the core sensing device, a base disk and a magnetic body cover form a magnetic field; the base disk is of a multi-layer stack type disk structure; the bottom of the base disk is connected with an electric field power source; and the base disk is connected with an alarm. The intelligent urban flood early warning management system can better satisfy market demands, and the use prospect of the intelligent urban flood early warning management system is brighter.