Based on the data of 1986- 1990 and 1997- 2001 shrimp resource surveys and monitoring in recent years in the East China Sea, a biological characteristics study of Solenocera koelbeli fishery was given. 6122 Solenocera koelbeli were measured, in which 3077 were female, 3045 male. Survey was condncted at altogether 115 stations in May, Aug., Nov. 1998 and Feb. 1999 in the area between 26?00′N and 33?00′N and west of 127?00′E. The survey vessel was a shrimp-trawl ship, with its tonnage being 100 and power 183.87 kW. The fishing tool was beam shrimp trawl net. The beam length was 20 m and trawl speed was 2 knots; i.e. from one station to adjacent one it only needed one hour. Results showed that the average fishing rate of the shrimp was 562. 3 g? h^-1. The rate hit 1283.8 g? h^- 1 in autumn. The shrimp belongs to the high-thermal and high-saline species and mainly dominated in the water areas in east of 60 isobath and of over 34 salinity and 12 - 24 ℃. On the basis of annual statistics, its community average length and weight of female were 76.0 mm,7.0 g, respectively; of male, 72.8 mm,5.5 g,respectively. Both reached their maximum in June - September and went down to their minimum in Feb- April. The breeding period was in June- Nov., with flourishing period being Aug- Sep.. There were two fast [growth periods every year. The first one was in Aug - Nov, with the relative growth rates being 12.9% - 11.2% for female,7.9% - 5.9% for male. The other one was in April- June next year, the corresponding rates were 22.4% - 13.4% ,14.8% - 14.1%. Female was a little hit more than male, with its ratio being 1：0.99. It took food all the year round and the food taking grade was 1 - 2. The food taking reached its top in summer.