Abstract: To study the current situation of inundation in urban area of Guangzhou, 4 locations are chosen to observe, including Tinashou road, Huacheng avenue, Liede brige and Sun Yat-sen university campus. Observation method is designed, which consist of rainfall, inundation depth, flow velocity and inundation area. The rainfall is measured by doppler weather radar; inundation depth is estimated with electronic depth gauge; flow velocity is observed by electronic wave flow meter; and inundation area mainly recorded with digital camera. During April to June in 2017, 5 inundation events were observed, which provides a valuable first hand survey data for further analysis flood disasters in Guangzhou City. Besides, it would be the support data for developing urban flood prediction model.