The related factors of transportation demand quality is put forward by analyzing and comparing of the quality and the quality of transportation demand. The related factors are security (S1)、 time (S2)、 accuracy (S3)、convenience (S4)、 comfort (S5) and economy (S6). The interpretive structural modeling method to analyze the factors influencing the quality of transport demand is used in this paper. The conclusion is that the most direct factors of transportation reflecting the demand quality are S1, S4 and S5, the most basic factors are S2, S3 and S6, the most crucial factor is S2. Evaluating the lateral and longitudinal relationship between all the factors is used to improve the quality of transportation demand.