In recent years, light?emitting organics have attracted widespread attention due to their unique functions. Among them, room temperature phosphorescent organics have the characteristics of longer wavelength and long life due to their triplet excitons and relatively slow decay rate, resulting in a wide range of application prospects in optical devices, photocatalytic reactions and other fields. At present, the construction of room temperature phosphorescent organic system is mainly accomplished by promoting spin?orbit coupling and suppressing the non?radiative decay process from the triplet state to the ground state. This article summarized the development of room temperature phosphorescent organic system in recent years. According to how to design room temperature phosphorescent organic system, several methods were proposed and their principles were analyzed, and the future development and application of room temperature phosphorescence organic system were prospected.