The research on the prevalence of gastrointestinal parasites of antelopes and goats has been conducted in and around the Kahuzi-Biega National Park. The method of collecting dung by hand coupled to that of the laboratory coprology analysis were used. The results of the study show that the antelope and the goat have in common as roundworms trichostrongylus, Nematoduris and flatworms, Fasciola gigantica (Trematodes) and as other worms, Coccidia. Gastrointestinal parasites in both sites (PNKB and around the PNKB).Trichostrongylus, are abundant in antelopes and goats, but Coccidia are abundant around the PNKB so in goats. Goats have a high prevalence of parasites for the same species found in the two sites namely trichostrongylus, (51.2%), Nematoduris (8.7%) and Coccidia (47.5%) against trichostrongylus, (47, 5%), Nematoduris (1.2%) and Coccidia (21.2%) in antelopes whereas for Fasciola gigantica, antelopes have a high parasite prevalence (26.2%) than goats (20%). The other prevalences of parasites in antelopes are distributed as follows 5% respectively for Gardia lamblia and Molineus, 1.2% respectively for Balatidium parcel, Monezia expensa, Cappilaria sp and Ascarus lumbricoides and 2., 5% Trichuris trichura. The parasite infestation rate in the two small ruminants (antelope and goat) is at least 10 parasitic elements counted on the slide of Molineus, Trichuris trichura, Ascarus lumbricoides, Cappilaria sp, Monezia expensa and Nematoduris while for Coccidia and tricostrongylus, is 10 to 100 parasitic elements counted on the blade. The infestation rate of gastrointestinal parasites is 10.1% in antelopes and 31.9% in goats. Goats around the PNKB are quite infested with trichostrongylus, as the antelopes at PNKB. For Coccidian parasites, goats around PNKB are infested in the same way as PNKB antelopes.