Abstract: From 1994 to 2006, fields studies undertaken in Cameroon permitted to enrich the biodiversity of psyllids of Triozidae family. Thirty Five species of triozids exist in Cameroon, among which 28 species was captured during this survey and 7 other species were cited in the literature review. Two genus were identified: Trioza and Pauropsylla. Seventeen new species exist and 2 species previously described elsewhere in the Afrotropical region were captured in Cameroon for the first time. The Triozidae psyllids fauna from Cameroon is enriched of 19 species. The damages caused by these psyllids are mainly the apparition of pit galls or crypts on leaves, leaves are folded and sometimes wrapped, deformed with necrosis.