With the development of the computer network technology and the electronic commerce, more and more firms establish the electronic sale channel and get great profits. The huge supply chain network is established through the new idea and technology. The node location selection is a planning process that chooses a location to set up a logistics node in an economy zone with multi demands. Hence, its location selection is a key link in the logistics system planning. In this paper, we consider the

more »

... cific particularity of the e-commerce. Then, we constraints cost and delivery time of the logistics model. At last, we apply the heuristic algorithm to the location model. The results show that the algorithm can apply to the logistics distribution problem under the electronic commerce environment excellently. 336 Copyright ⓒ 2014 SERSC characteristics of products and efficiencies of the websites with the data from online customer ratings [2] . Wang Ying and Sang Dayong analyzed the relationships between the 3PL and supply chain members [3] . The authors suggested that only when the 3PL reengineers its logistics business process to accommodate the customer could it maximize the value of the customer. Markus Hesse thought the significance of electronic commerce (e-commerce) for freight transport, logistics and physical distribution, regarding both business to business and business to consumer commerce. At present, scholars get many achievements about the researches of the distribution problem at home and abroad. From the division of the model and algorithm, this problem can be divided into the three main research directions. One is the model and algorithm of the distribution center location model. Other one is the model and algorithm of the distribution path optimization problems. The last one is the model and algorithm of locating the vehicle routing problems. Among them, the typical research method of the continuous model uses the gravity method to solve the location problem of Euclidean distance which is proposed by Francis and White [5] . The research method of the discrete classical model is Kuehn-Hamburger model [6] , Baumyr Wolf method [7], the mixed integer programming method [8], Capacitated Facility Location method [9] and P-middle value problems [10] . The dynamic location model is to solve the facility location problem. We solve the problem from the angle of the demand and the cost across the time of the planning period. The model makes the total long-term cost minimum [11] [12] . The stochastic model and its research methods are mainly divided into two categories. They are probability method and the scenario planning method. The system input parameters of these two methods are uncertain [13] . Due to the location problem of the logistics distribution center under the electronic commerce environment, the model and the algorithm is complex. Thereby, we should not use the linear model to handle this problem. We use the heuristic algorithm to solve this problem. The structure of this paper is as follows. The first part of this paper is the introduction of the related problems. The second part is the establishment of the mode. The third part is the numerical analysis and the final part is the experiment. Establishment of the Model The Related Conditions of Establishing the Model The decentralized location model needs the address sets of the demand points in a certain area. We select a certain number of alternative addresses from the address sets. We make the total costs of the logistics distribution system minimum between the logistics distribution center and each customer. 2.1.1. The Assumptions: (1) We only consider the distribution of one product. (2)The production capacity of the logistics enterprises can meet the customers' demand. (3)We only consider the new distribution center in a certain range of the options. (4)The distributed goods are delivered in one-time transportation. (5) A distribution center only supplies a client. ( 6) We count the customers' demand according to the regions. And we know the demanded quantity of the product for the customers. (7)The transportation cost of the distributed products is in direct ratio to the transport volume. (8)The fixed cost of the establishment and the operation is known, if a distribution center is selected.