In order to further explore the biological characteristics and resource status of Uroteuthis edulis in the East China Sea, this study conducted biological measurement and analysis on samples collected by trawlers in the East China Sea from 2020 to 2024, and estimated the growth and mortality parameters using ELEFAN method and length-converted catch curve method. The results showed that there were significant differences in ML and BM between genders at 4 years （P<0.001）. The b value was less than 3, indicating negative allometry. There were significant differences in the relationship between ML and BM of female （P<0.05）. The K value reflects that the East China Sea is more suitable for female growth. There was little difference in the coefficient of mortality between male and female. The degree of development is more consistent. The results show that there are years and sex differences in the growth of the East China Sea, and the East China Sea is more suitable for the growth of Uroteuthis edulis in the East China Sea than the Beibu Gulf. In addition, the resource exploitation rate is greater than 0.5, and the stock resources have the risk of overexploitation. This study can provide a reference for stock assessment and support for its sustainable development and utilization in the East China Sea.