The relationships are uncertain, but a study based on the mitochondrial cytochrome b and 12S and nuclear myoglobin intron 2 revealed no evidence for a close relationship to the morphologically similar Blyth's leaf warbler P. reguloides complex.

[2] The Emei leaf warbler is a small passerine, measuring 11–12 cm (4.3–4.7 in) in length.

The wings and tail are primarily greenish, with distinct pale yellowish tips to the median coverts and broad pale yellowish tips to greater coverts, forming two prominent wing-bars.

[3][9] The Emei leaf warbler breeds in temperate deciduous broadleaved forest, sometimes with some spruce, Picea or Abies.

[3] Based on male singing activity, the breeding period presumably begins in the mid of to the late of April.

[3] The song is a clear, slightly quivering, straight trill between about 4 and 6 kHz, usually lasting 3–4 seconds.