In order to obtain a reasonable public transit assignment,by introducing the Coulomb's Law,intercelland intracell models for generating transit station OD matrix are proposed according to the distribution of transit sta-tions in a traffic zone.Then,the models are optimized according to the characteristics of different transit stations.Moreover,a sensitivity coefficient analysis is carried out and the corresponding solving model is constructed.Final-ly,the effectiveness of the model is verified through a case study.The results show that the proposed model is ofhigh theoretical and practical value and helps to improve the reliability of the forecast of transit passenger flow.