Research on the current situation of fish resources in Ulungur Lake.The study shows: There are 7 species of native fish,after transplanting by introducing species and filling the lake with water,the species were increased to 22 among them,18 species are the economic fish and the superior species is transferred from Leusiscus leusiscus baicalensis(Dybowski) to Hypomesus olidus(Pallas).During the past 40 years,the annual fish production has been fluctuated 800-4400 t.With the exacerating of human activities,the water surroundings have been changed and the fish resources have lost its balance,especially,the superior native fish resources have an invisible decline.Therefore,to strengthen care of the fish by law,the science and the technology encouraging the fish and lower catch strength,protect the fishery water environment,change to depend on the nature to multiply greatly only to add the resources,science leads to transplantation,making use of fish to produce potential well,constructing high-quality fish to grow the quality resources database,the value processes to protect the fresh industry,developing the recreational fishery etc,counter plan,attainability the fishery resources of that lake can keep on to develop the target.