The invention relates to a medicine composition for treating intestinal parasitic worms of a finless eel. The composition comprises a western medicine component and a traditional Chinese medicine component that are mixed uniformly at a mass ratio of 1:(500-1500); the western medicine component is albendazole; the traditional Chinese medicine component comprises semen torreya, pumpkin seeds, radixstemonae, fructus quisqualis, cyrtomium fortunei, liquorice, gorgon fruits and common yam rhizome that are powder; and the medicine composition is added into feed of the finless eel according to a dose of 1-3% by mass of the feed and fed for three times per treatment course, once every other 1 day. The medicine composition comprising albendazole has a better effect of expelling and killing the intestinal parasitic worms of the finless eel; the medicines have definite functions and synergistic effects; the medicine composition has effects of killing the worms, removing food retention, resolvingstagnation and conditioning organs; and the medicine composition acts rapidly, is short in treatment course, high in cure rate, safe and reliable, has a significant treatment effect on an intestinalparasitic worm disease of the finless eel and has no toxic or side effects.