The Rusty-flanked Treecreeper is a small bird of high forests from the eastern Himalayas into southwestern China. It is recorded in mixed conifer and broadleaf forest with tall trees.
It has a white chin and throat, a pale ochre breast, and rusty coloring on the lower parts. The sexes look similar.
In high forests with tall trees, it searches for beetles, moth larvae, spiders, and other small prey.
An extinction-risk assessment has not been added yet.