Many trematode parasites use molluscs as intermediate host to ensure their life cycle. In Burkina Faso, few studies have been carried out on diversity of trematode larvae on snails. For that reason, the present study aims to determine the diversity and the prevalence of trematodes larvae in snails in the reservoir of Loumbila for better safeguarding of biodiversity and effective control of parasitosis transmitted by snails. This study was conducted between September 2019 and March 2020. During this period, 479 gastropods were collected using three complementary methods; a kick net was used to collect molluscs in the littoral and pelagic areas, a grab Eckman for deep benthic areas and hand picking for shoreline molluscs. The cercariae larvae stage of trematode were investigated using the shedding crushing method (by using cercarial emergence and crushing snails). The infection rate was found to be 3.55%, i.e. 17 animals infected in a total of 479. Twelve digeneans species cercariae were recorded from five species of Prosobranch snail, Cleopatra bulimoides, Cleopatra sp, Lanistes lybicus, Lanistes ovum, Bellamya unicolor. These cercariae were divided into four major groups including Cercariaeum cercariae (Two species), Xiphidiocercariae (Three species), Furcocercariae (Six species) and cercaria type 2. Cleopatra sp showed the highest diversity of trematode with nine groups of larvae among the gastropod species collected. The genus Cleopatra was the most parasitized host with the highest prevalence and Lecithodendrium sp was the most abundant parasite species during this study.