Perenniporia puerensis is a poroid crust fungus in the family Polyporaceae.

Found in Yunnan, China, it was described as a new species in 2017.

The crust-like fruit body of the fungus have a yellow to ochraceous pore surface, with 4 to 6 pores per millimetre.

P. puerensis has a dimitic hyphal system with non-dextrinoid and cyanophilous skeletal hyphae that are encrusted with pale-yellow crystals.

The spores are egg-shaped to somewhat spherical, thick-walled, non-dextrinoid, and cyanophilous, with dimensions of 4.3–5.5 by 3.7–4.7 μm.