Abstract: <SPAN lang=EN-US>Introduced basic properties and application of red phosphorus flame retardant as well as microencapsule technology.Studied the application of microencapsule technology in red phosphorus flame retardant.Discussed the existing problems,such as optimized coating,whiteness,particle size,synergistic effect of multiple system,compatibility,smoking release,smoking inhibit,multifunction as well as flame retardant and smoking inhibit<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>mechanism etc.of microencapsulized red phosphorus flame retardant.Summarized the recent progress on microencapsule red phosphorus flame retardant at home and abroad.At last,pointed out the research direction of multifunction,superfine,whiteness,synergistic effect of multiple system and smoking release technique etc..<SPAN style="mso-spacerun: yes">&nbsp;&nbsp; </SPAN></SPAN>