In view of the high cost of controlling all the nodes in the traffic network, a pinning control framework for urban traffic network analysis and control network in the case of limited resources were constructed by this paper, and a new pinning control algorithm for urban traffic network was proposed. By using the mutual coupling and containment relationship between nodes and controlling some key nodes in the road network, the expected behavior of the whole network was guaranteed, and the limitation that the system consumes too much computing and control resources were effectively solved. The control input was set as the variation of the duration of the green light, a new pinning controller was designed, and the conditions for effectively ensuring the stability of the urban road traffic network are proposed. Through the simulation analysis, the signal control method proposed can make the urban road traffic network achieve the desired state, and effectively improve the utilization of road resources in the case of limited infrastructure and control costs.