Through GIS spatial analysis and entropy calculation,the ecoenvironmental quality of highway is studied.By use of pressurestateresponse model and expert advice method,the highway environment evaluation indexes are determined.The indexes are treated with dimensionless method.On the basis of entropy theory,the weight of evaluation indexes is calculated.Then,the ecoenvironmental quality evaluation model of highway is set up.Finally,supported by the RS and GIS,the status of ecological environment of a highway in Qinghai Province is analyzed.Using MATLAB tools,the entropy of each index’s value and the entropy weight are calculated,and the ecological environment quality of the highway is researched by using the ecoenvironmental quality evaluation model.