Abstract: We monitored fishery resources in September 2013 - July 2014,Four surveys were conducted throughout the year,we preliminary understood of the current situation water quality and plankton of the reservoir. The concentration of phytoplankton in the Delingshan reservoir is very rich, and the average biomaes reaches 21.58 mg/L. The algae biomass was the largest,with an average of 11.7 mg/L. Higher phytoplankton content is a sign of eutrophication of water body, The average biomaes of zooplankton was 0.473 mg/L. The average biomass of benthos is 2.43 g/m^2. Through estimating the phytoplankton provides fish productivity 110.0 kg/hm^2, zooplankton provides fish productivity 4.02 kg/hm^2,calculated at 133 hm^2 squared, Delingshan reservoir natural bait biological provides fish productivity with 15 507 kg every year. Summarized the results of the survey, and we put forward the preliminary suggestions for exploitation and utilization of Delingshan reservoir fisheries.