Abstract: Considering the rapidly growing demand of travel and unreasonable structure, a kind of dynamic charge model and application of bus travel is put forward. As is known, people have different travel behaviors in different periods of a day, which leads to kinds of traffic status. By analyzing data of IC card, a curve model is built in order to discover travel patterns of urban people, and further optimize transportation in rush hour. IC card data from bus-line in the city is studied by statistics, contrast and model-building to further analyze travel time, demand and varying curve to find the travel habits of urban people. Lastly, measures of dynamic charge are proposed to control travel flow in busy time. The result shows that this dynamic control design can optimize the daily travel structure and reduce travel density, which probably provides some reference for public transportation management.