Humpback (Culter dabryi) which belonging to the genus Culter is a common economical fish which lives in lake and river from south to north in China. The purpose of this study was to clarify population characteristics. We totally collected 592 specimens from Lake Changhu, Hubei Province, in September 2015 to August 2016 and measured the body length and body weight of each individual, collected scales to investigate the marks for each of fish. The results showed that the ring mark on the scales mainly was cutting type and sparse-dense type (Fig. 1), there were 7 age classes ranging 1 to 7 in the population, particularly the age classes of fish 1 to 4 years old took advantage in quantity, which accounted for 91.38% of the total population (Table 1). The standard length of the samples ranged 71﹣388 mm, of 55.07% of them within the range of 101﹣200 mm; the total weight was with the ranged of 4.0﹣916.2 g, of which 68.75% individuals weigh in 4.0﹣149.9 g (Fig. 2). The relationship between body weight and body length was described by the equation: W = 0.008L3.148(n = 592, R2 = 0.995, P < 0.01) (Fig. 3). The T test showed that the growth of Humpback belonged to the “constant speed” type; and it was no significant difference between the males and females. According to the growth, the growth rate and acceleration growth rate equation of body length and body weight were described as Lt = 49.103[1﹣e-0.194(t + 0.268)]，Wt = 1668.330[1﹣e-0.194(t + 0.268)]3.148. The growth inflexion point of the body weight and length was 5.64 years old, and its corresponding body length was 33.4 cm and body weight was 502.4 g (Fig. 4). The present mortality coefficient of Humpback is 0.80 (Fig. 5), natural death coefficient is 0.42，fishing mortality factor is 0.38，resource exploitation rate E is 0.48 / year. According to the method of body length analysis, the amount resources of the Humpback were estimated to be 1 809 710 individuals (15.18 t) in 2015﹣2016 (Fig. 6). In order to maintain the stability of the Humpback resources, it is suggested to catch those fish that is more than 33.4 cm in length.