Abstract: This paper demonstrated detailed the feasibility of using the Gumbel-Logistic method on the flood frequency in Wujiang River. This paper discuss ed WuJiang return period of the flood return period of Wuajing River, based on the different combination of the flood characteristics. The results displayed that the flood return period in 2006, which is 8800m3/s peak flow flood, is 131 years. Compared to the 599 return period, which calculated by the P-III method, thers has 468 years difference between the two menthods. The main reason is theGumbel-Logistic method need two variables, it can reflect the more details information on the flood.