In order to improve the car sales service 4S shop management level,improve the economic and social benefits of enterprises,incentives are used to encourage their own 4s shops.In this paper,throughout the related analysis of the quarterly and annual awards incentive program in large-scale domestic automobile enterprises,entropy method with MATLAB software is applied to establish the dimensional fit function.In the data processing,the multiple linear regression function into Lingo software is employed to get the best solution;and C language is used to run the screening data program through the consistency test program in the sensitivity and error analysis.First of all,consider the company to maximize profits and maximize the amount of complaints in the store to maintain a low target;in terms of staff,we should consider providing more incentives for employees;in the customer,the overall satisfaction,service Attitude,vehicle cleanliness based should be improved.And two programs for the monthly profit and excess profits of progressive incentives should also be improved.