Intrinsic RTP emitters possess inherent characteristics such as efficient ISC, strong triplet radiative transition, and low nonradiative decay. These attributes enable RTP to be observed without depending on the robust molecular environment, thus making phosphorescence in solution possible. Furthermore, intrinsic RTP properties can be promoted and amplified by molecular aggregation due to the more energy splitting and ISC channels, more rigidified structures, and avoidable triplet exciton quenching. Consequently, the rational design of intrinsic RTP materials is expected to achieve efficient phosphorescence in both solution and solid state. Dendrimers, highly branched macromolecules, are expected to become promising candidates for efficient intrinsic RTP materials because of their regulable triplet energy levels and characteristics, protective bulky peripheral dendrons and excellent processability and stability in various environments. However, due to the high complexity and difficulty of synthesis, the use of dendronization strategies to achieve efficient intrinsic RTP dendrimers largely remains unexplored.