The invention relates to engineering precipitation, in particular to a kinetic energy using method of engineering precipitation. A power generation method using engineering precipitation is characterized in that engineering precipitation is water in a precipitation well of a foundation ditch, a drainage ditch is arranged on the periphery of the foundation ditch, an outlet of the precipitation well is connected to the drainage ditch, and an outlet of the drainage ditch is connected with a hydroelectric generation device. According to the method, hydroelectric generation is used, energy conservation and environmental protection are achieved, and pollution is avoided; generated electricity can serve as an emergency power supply on site, when constructional engineering construction, in particular to civil construction is carried out, an on-site electric power system is often incomplete, the problem about power outage may happen, and the method solves the problem about emergency electricity utilization.