Research On The Upgrade Path And Performance Evaluation Of Small And Medium-Sized Logistics Enterprises Under "Internet +" Mode

China's modern logistics industry started late, after more than 30 years of development, the overall size of the logistics industry increased significantly, the development environment and conditions have gradually improved, has become an important part of the national economy. In the huge logistics system in the small and medium-sized logistics enterprises accounted for half of the country, has become an important way to stimulate employment, due to the small and medium-sized logistics enterprises behind the inefficient operation of the information sharing system is not perfect lead to each link can not close together. With the continuous maturity of Internet technology, as well as the state of logistics enterprises continue to attach importance to small and medium-sized logistics enterprises ushered in a new opportunity for development, seize the "Internet +" this opportunity to achieve transformation and upgrading,is the inevitable demand for enterprises to improve their competitiveness ,but also small and medium-sized logistics enterprises to grow the only way to grow.This paper first combs the domestic and foreign scholars on the enterprise upgrade, the definition of small and medium-sized logistics enterprises, the Internet + and other theoretical research, and the relevant theory for review, to provide a theoretical basis for the later; Secondly, it analyzes the internal and external environment of small and medium - sized logistics enterprises and the opportunities and challenges brought by"Internet +" to small and medium - sized logistics enterprises, and expounds the necessity and importance of enterprise upgrading. Then, the Internet technology is used to optimize and upgrade the logistics business process, service function, logistics brand and marketing mode respectively.Four upgrade paths are designed for reference of small and medium - sized logistics enterprises. Thirdly, the performance evaluation index system of small and medium-sized logistics enterprises is established to evaluate the performance improvement situation after the upgrade. According to the Balanced Scorecard and KPI theory, the evaluation index is established,and the composite weight of the index is determined by the analytic hierarchy process - entropy method. Fuzzy comprehensive evaluation method to compare the performance of "Internet +" before and after;Finally, the introduction of empirical analysis to verify the use of Internet technology to upgrade to bring performance to the enterprise, but also illustrates the effectiveness of this study.The innovation of this paper is based on the "Internet +" action guide,the "Internet +" into the logistics industry to put forward the corresponding upgrade path, designed based on the Balanced Scorecard theory KPI index system, with empirical evidence of Internet technology support of the upgrade path to effectively enhance the business performance, the Internet on the small and medium-sized logistics enterprises to play a positive role in upgrading.