Abstract: Taking three coastal districts of Lianyungang city as research units and adjacent sea areas as evaluation objectives, this essay analyzed the development intensity of both coastline and sea area, the fishery resources comprehensive bearing index, marine functional zones sea water quality standard rate, marine ecological carrying index and the intensity of the development of the islands with no residents.This essay carried out basic environmental research of marine space resources, marine fishery resources, marine ecological environment and island resources, and combining the method of 'basic evaluation-special evaluation-progress evaluation, ' adopted the buffet effect evaluation method to divide sea level of overload and early warning of districts.The results showed that comprehensive bearing types of the three districts were "overload" and the warning level reached "severe warning".The main factors which affected the Lianyungang marine resources environmental bearing capacity were sea water quality overloading, high strength of some coastline development and ecological degradation of several no residents' islands.After all, this essay analyzed the overload factors from the reality and assessment standard, and provided the corresponding strategies and suggestions.