Abstract: At present, my country's socio-economic development is booming and prosperous, and the urbanization process is accelerating, which makes the scale and number of urban buildings continue to expand. Project construction management is of great practical significance for improving the quality and schedule of project construction. Therefore,in the specific construction of the project, while ensuring the management of construction technology, it is necessary to continuously optimize and improve the corresponding project cost management and construction budget work according to the actual construction needs of the project and the management status of the construction project.Management quality, and then effective improvement of project construction benefits, this article explores the construction cost management and construction budget control in detail, based on the role of construction budget in construction project cost management, with a view to provide industry professionals with corresponding references to better assist construction The industry realizes healthy and sustainable development at an early date, and then provides guarantee for social stability and improvement of people's living standards.