1. Influencing factors of location selection of logistics distribution center (1) Distribution and quantity of goods. This is the distribution object of the distribution center, such as the distribution of the source and destination of goods, the prediction and development of history, present and future. The distribution center should be optimized as close as possible to the production place and distribution area. With the expansion of distribution scale, the number of goods is also increasing. The higher the growth rate of goods, the more reasonable the location of distribution center is required, thus reducing unnecessary waste during transportation. (2) Transportation conditions. The location of the logistics distribution center should be close to the transportation hub, so that the distribution center can form a suitable node in the logistics process. If conditions permit, the distribution center should be as close as possible to railway freight stations, ports and highways. (3) Land use conditions. In today's increasingly expensive land, the land occupation of logistics distribution centers is becoming more and more important. Use the existing land or re-requisition the land? What is the land price? Whether it meets the requirements of government planning. , in the construction of distribution center should be considered comprehensively. (4) Commodity flow. The consumer goods produced by enterprises change with the transfer of population, and the distribution system of enterprises should be better positioned accordingly. At the same time, the market of industrial products will also change. In order to determine the flow changes of raw materials and semi-finished products, the specific situation of commodity flow should be considered when choosing the location of logistics distribution center. (5) Other factors. For example, the convenience of labor, transportation and services, and the restrictions on investment. Second, the logistics distribution center location method (1) qualitative analysis method. Qualitative analysis is mainly based on the influencing factors and principles of site selection, relying on the rich experience, knowledge and comprehensive analysis ability of experts or managers to determine the specific site selection of distribution centers. There are mainly expert scoring method and Delphi method. The advantage of qualitative method is that it pays attention to historical experience and is simple. Its disadvantage is that it is easy to make mistakes of empiricism and subjectivism, and it is not easy to make ideal decisions when there are many places to choose from, which leads to low reliability of decisions. (2) Quantitative analysis method. Quantitative methods mainly include barycenter method, baumol-Wolff method, traffic planning method, clustering method, CFLP method, mixed 0- 1 integer programming method, bilevel programming method and genetic algorithm. The advantage of quantitative location method is that it can find more accurate and reliable solutions. Among them, the center of gravity method is a common method to study the location of a single logistics distribution center. In this method, the demand points and resource points in the logistics system are regarded as the logistics system distributed on a certain plane, and the demand and resource quantity of each point are regarded as the weight of the object, and the center of gravity of the object system is the optimal setting point of the logistics network.