The work aims to analyze the key technology for preparation of antibacterial air filter paper and point out the problems required to be solved in this research field and the future research direction, thus providing reference for the preparation of antibacterial air filter paper in the future. Through the relevant information at home and abroad, the types of antibacterial substances and fibers were analyzed from the materials of antibacterial air filter paper, and the preparation and main performance research methods of antibacterial air filter paper were summarized. Some antibacterial substances endowed the air filter paper with antibacterial properties, but the particle migration characteristics and safety performance were still uncertain. The mixed ultra-fine fiber was expected to improve the filtration performance of the filter paper, and the comprehensive antibacterial and filtration properties needed to be systematically studied. It is of great research significance and has huge market prospect to develop high-efficiency, safe and environment-friendly antibacterial air filter paper based on plant fiber and natural antibacterial substances.