The primary difference between modern and traditional logistics is informatization, but compared with other developed countries, the development of grain logistics informatization in our country is very slowly.

With the full use of the information technology and the popularization of the commucations of the network information,various grain information used in the past make the sharing of grain information difficult because of its data characteristics such as abundance,multi-source,timeliness,extensity,diversity and so on.

This paper analyzes the significance of grain logistics modernization, explains the factors that restrain it and advances the countermeasures to improve it.

Present state and development trend of grain logistics in China;

Development of GIS-based grain logistics decision-making support system;

On Scientific Operation and Normalizable Management of Grain Logistics;

Then,the model base of the LD_DSS is discussed,the flow of some core problems such as grain distribution centers allocation and the transportation routes planning in the grain logistics distribution system is discussed.

Based on the grain logistics distribution problem of the grain logistics enterprise,combing with the theory and methods of GIS,this paper did the systems analysis of the GLD_DSS(grain logistics distribution_decision support system).

In the process of reforming old industrial bases,it is important to develop food logistics industry and optimize agricultural structure in order to promote old industrial base .