Abstract

　　　With the production technology and the rapid development of economic globalization, the "global village" and" world factory ", in modern production, by reducing the cost of raw materials and equipment to improve their own means of production capacity, to improve the efficiency of enterprises has become very limited. Therefore, modern logistics has become a new economic growth point, logistics is the third profit source of enterprises, and the whole logistics system contains the enormous potential economic benefits. This is the article research to the actual business enterprise logistics center location problem.
　　　In the traditional logistics center location model, mostly assumptions that are involved in the logistics system of inventory costs, transportation costs, demand, transportation time, and other key factors as the known constant, and then based on the required one or more logistics center. But in practice, some influence logistics center location factor is not certain, such as geography, economic factors, environmental factors, the transportation time by traffic influence to wait, thus formed the location of the logistics center uncertain environment. In the complex logistics system design, should these uncertain factors into consideration.
　　　This paper introduces the logistics center and outlets of the layout of the relevant concepts; This paper illustrates the theory of gravity method under the guide of the logistics center location method, which tells the story of the development of the method of gravity, advantage, the basic principle and application of the analytic hierarchy process (ahp) basic steps; Focuses on the actual site selection factors, the model is built and the solving algorithm and will last a gravity method is applied to an example in, find out the best logistics center address is effectively, accord with the actual situation.

Key word：Logistics center; Location; Gravity method; Logistics planning