Ambulatory medicine is an important way to shorten the average length of hospital stay, reduce the cost of medical treatment, and enhance the efficient of diagnosis and treatment, providing patients with efficient, fast and convenient medical services. In combination with the developmental practice of ambulatory medicine of the First Medical Center of PLA General Hospital, this paper analyzes the operation and management mode and the innovative development process of ambulatory medicine. Through discussion, this paper gains a deeper understanding of ambulatory medicine, and confirms that in order to ensure the efficient and safe operation of ambulatory medicine, it is necessary to formulate specific norms and unified standards to promote the development of this new medical service mode.