Flame retarding microcapsules encapsulate flame retardants such as organophosphorus system with the encapsulation technology.Generally, it is difficult to conduct the mixing process to oily flame retardants during the actual production process. In addition, oily flame retardants often separate from surface of base materials, leading to a series of problems such as large volatility and poor weatherability. Xiangjie inflaming retarding microcapsules can greatly improve heat resistance and waterproofness of flame retardants; in addition, the compatibility between flame retardants and high polymer materials such as resin is strengthened. Therefore, the products isolate toxicity and smell of inflaming retardants from human body as well as improve the inflaming retarding efficiency.