Starting with the serious traffic problems faced by the river-valley cities and through the introduction of definition and characteristics of the river-valley cities, the article analyzes the influence of the transit traffic of the river-valley cities on the urban inner traffic.

The article introduces the traffic investigation method commonly used in the study of thetransit traffic, and puts forward the selecting principle of the investigation places and investigation time period in the investigation of the urban transit traffic investigation, taking the record of the vehicle license plate for the investigation as the focal point.

This article expounds the changes of regional traffic condition and affects in transit traffic The author gives the best model of combining the express way and the road system of city.