City intersection is the joint of road network , which plays an important role in road capacity and service . it is very important and valuable that we should try our best to manage city intersection traffic control and dig deeply current traffic resource so as to improve intersection capacity and debase delays and queue length . the paper does a little work on the study field for promoting designing and controlling civil intersection intelligently and integratively 解決好城市交叉口的交通控制管理,挖掘現有交通資源的潛力,提高交叉口通行能力,減少在交叉口處的停車與延誤,是一項利國利民的重要研究工作,本文在這方面做了一些探討,望能為早日實現我國交叉口設計、控制、管理的智能化、集成化和專家知識系統庫盡一份力量。