Considering the fairness, efficiency, constructing cost and some other factors of emergency rescue facility location, a multi objective decision model which can apply to different deployment decisions for large scale emergency incident facility locations. According to the general model of plant growth simulation algorithm, a solution method of target function based on plant growth simulation is proposed. By calculating on the real instances, the result shows the feasibility and rationality of multi objective decision model, the model is optimized with the proposed solution algorithm, the proposed method has a better performance.