Abstract: At present, cities are developing rapidly, high-rise buildings are constantly rising, and the number of domestic high-rise buildings is increasing. With the development of high-rise buildings, the requirements for deep foundation pit support construction have become more stringent. Deep foundation pit construction must meet the requirements of modern building construction, and adopt scientific construction technology to promote the better development of my country's construction industry. Based on this, this article introduces several common types of deep foundation pit support, analyzes the problems existing in the construction of deep foundation pit support, and discusses the key points of the application of support technology in order to provide references for actual construction.