The caddisfly fauna of Liaoning Province, in northeastern China, is one of the least known Trichoptera faunas in the People’s Republic of China, with only 21 species (and 1 subspecies) of the 1253 Chinese species reported previously from this Province. A recent collection from Mt. Laopingding, Fencheng City, included 13 species, at least 9 of which are new species records for the Province, 3 are new species records for Palearctic China, and 2 others are new records for China. The species belong to 7 genera and 5 families which were not previously known from Liaoning. Variations in the male genitalia of Hydropsyche orientalis Martynov, 1934 and H. simulans Mosely, 1942 are discussed.