Abstract: In order to quantify the psychological factors in the evacuation process, the theory of relying on psychology and active particle dynamics in the project are combined to expand the direction of speed selection under the micro- scale of the mesodynamic model. Under the independent condition of one-dimensional space and time, the basic graph curve of average velocity and density was calculated, and the rationality of the model is verified by empirical data. Based on the quantitative management strategy of the basic graph curve, the evacuation characteristics under the conditions of relying on psychological parameters and site quality parameters were given, and the optimal site density range was determined by the average speed according to the numerical simulation results. The best evacuation effect was determined when the degree of psychological dependence was β∈[0.6,0.8]，α=1，ρ/ρmax≤0.4.

Key words: human factors engineering, safety psychology, behavioral dynamics, evacuation measures