The linkage debugging of automatic fire alarm system with ventilation and air conditioning, electrical, water supply and drainage and other related systems needs professional adjustment according to the nature and needs of different projects. According to the requirements of the current national construction and acceptance standards, the process flow is improved from the aspects of debugging new procedures, new methods and new technologies, and the latest linkage control logic principle of the system is sorted out, so as to summarize and refine a set of more applicable and innovative new commissioning method for automatic fire alarm system, which has been successfully applied in Shanghai rail transit line 15 project and achieved good results.