Abstract: Hairtail is one of the most important fishing objects in the South China Sea. In this paper， according to landing survey data collected from autumn of 2010 to summer of 2013， the seasonal differences of haitail landing catch and its percentages among the traw ling， gilling and longlining fisheries were analyzed. The results showed that the haitail catch was highest in autumn， and then was in w inter， spring and summer in order.Trawl net is the main fishing gear for hairtail. The seasonal change of landing catch was dominated by trawling fishery. The high fishing effort and low selectivity of trawl net resulted in signs of hairtail stock overfished. This paper suggested that the power index of medium and small trawler should be used to build large -tonnage light cover net fishing boats， so as to optimize marine fishing structure and improve the pelagic fish resources development. Strict management measures should be specified， and the fishing log collection should be conducted by combining with gas price subsidy policy， which could further improve the fishery resources monitoring and management system， and provide scientific reference for conservation， evaluation and sustainable development of hairtail resources.