Abstract: Keeping the old customer is so important for the civil aviation corporation development that all corporations pay a lot of attention.The influencing factors of customer loyalty can help to improve the civil aviation corporation service level.Based on Partial Least Square-Structural Equation Model(PLS-SEM),the paper proposes a Civil Aviation Customer Loyalty Model (CACLM).The influence on customer loyal ty of different variables iss analyzed through loyalty indexes by the practical collecting data.It provided a way to test customer loyalty efficiently so that the service level could be improved.The research results shows that safety,corporation image andperceived quality are the first three factors affecting the customer loyalty.

Key words: PLS-SEM, customer satisfaction, customer loyalty