The invention belongs to the organic electroluminescent device technical field and discloses a phosphorescence device containing a heterocyclic phosphoric acid metal complex. The phosphorescence device provided by the invention contains a metal complex comprising a heterocyclic phosphoric acid auxiliary ligand; and the glass transition temperature of the hole transport material of the phosphorescence device is not lower than 85 DEG C. According to a device in the prior art, when ambient temperature ranges from 30 to 40 DEG C, and the temperature of an operating device is close to the glass transition temperature of a hole transport material, the device is unstable, and the service life of the device is adversely affected, while, with the phosphorescence device of the invention adopted, theabove situations in the prior art can be avoided. Compared with FIrpic-based and TAPC-based devices, the phosphorescence device provided by the present invention not only has higher device efficiency, but also has higher high-temperature stability.