Enterprises have obtained the authentication certificate through implementing ISO9000 quality certificati on system, the article has analysed the authentication enterprise s current situ ation and existing problem combining PDCA circulation, and introduced the sugge stion and measure and to improve and raise he authentication effect briefly.

By qualitative and quantitative analysis,this paper analyzes theoretically the function mechanism and the evaluation indexes system about the contribution of the automobile energy-saving certification to the petroleum safety,then puts forward the mathematical model which counts the contribution rate of the automobile energy-saving certification to the petroleum safety.