As the responsibility of national food security streams down,the regional food self-sufficiency security requirements enhance and the food production patterns change,the analysis of regional food security factors and the establishment of regional food security early warning model are very necessary.With an assumption of the external market constraints,in order to gradually raise the level of regional food self-sufficiency and achieve a basic balance between supply and demand within the region,warning indicators have been scientifically and rationally chosen through factor analysis,multiple linear regression methods,and the conditions for the establishment of a regional food security early warning model have been explored.By using Gansu Province as an example,an early-warning model is set,investigated and verified.The results show that the model can be an objective analysis of early warning for food security in Gansu Province,and it has referential significance for the research and building of warning models in other regions which have balanced food production and consumption.