The problem of Lake Eutrophication has aroused peoples concern in recur years.Eutrophication model is playing an important role in environmental management and control concepts and technology.This paper gives a brief overview of the lake eutrophication models of the application status.By the comparison and analysis of various types of eutrophication models,we found that the advantages of head algae and nutrient concentrations have signiticantrelevance,which reflects the degree of the correlation between the nutrients concentration and eutrophication.According to the spatial distribution of water quality monitoring data of the Nansi Lake,using linear and multiple stepwise linear regression theory,we have built Nansi Lake s correlation model of the chlorophyll a and the TP,TN and we know that the relevance of the test results is good.