Abstract: The massive discharge of industrial ammonia nitrogen wastewater has caused serious harm to the natural environment and human health. Therefore, how to treat industrial ammonia nitrogen wastewater economically and efficiently to meet the discharge standards has become an urgent issue that people must meet head-on. Typical technology and new technology for treating industrial ammonia nitrogen wastewater have been summarized and compared in this paper to provide a reference for its practical application. Among them, the methods for treating low-concentration ammonia nitrogen wastewater include: the adsorption method, chlorination method, biological method, membrane separation, land treatment, etc; the methods for treating high-concentration ammonia nitrogen wastewater include: the blowing off method, chemical precipitation method, etc; new technologies include: microwave method, ultrasonic method, photocatalysis technology, biofilm electrode method, etc.