Abstract: From Aug. 1979 to Mar. 1983, mebendazole or/and traditional Chinese medicine were used to treat 57 cases with echinococcosis, of whom 47 were unilocular or cystic type (liver, lung, peritoneal cavity, heart and spinal vertebra) and the other 10 belonged to liver multilocular or alveolar type. 57 cases were divided into 3 groups: (1) mebendazole was given alone in 20 cases; (2) traditional Chinese medicine was given alone in 23 cases; and (3) combined medication of mebendazole and traditional Chinese medicine were used in 14 cases. Mebendazole was given 400-600mg each time in adult, t.i.d.. One pill (10g) of Chinese herbs was given 2 or 3 times per day. One therapeutic course lasted 4 weeks. Most of the cases received 2-3 courses and a few patients exceeded 6 courses. The curative effects are determined by clinical findings, x-ray examination, ultrasonic echogram, and macro- or micro-scopic observations of the operated specimens (hydatid endocyst), and then graded as cured, improved, stable and progressive. The rates of these grades were successively calculated as 11.1%, 33.3%, 24.4% and 31.1% from 45 cases followed up for 0.5-2.5 year.