Abstract: Sefoepidemiological survey on human cystlcercosls by means of PVC membrance ELISA was performed in Ningxia from July to November 1989. The total number of residents examined was 7810, and positivity was revealed in 217 cases, the positive rate being 2.8%. Ninety-three of 3 551 males and 124 of 4 259 females showed positive rates of 2.6% and 2.9%, respectively, and no significant difference was found between them. However, the difference in positive rate was significant between the Han nationality (3.2%) and Hui minority (1.6%)(P0.005). Higher positive rate was exhibited in the urban inhabitants as compared with that in the peasants. The diversity of incidence was also present in different occupations and age groups; for the latter case, a tendency of increase of positive rate was viewed with the upgrading of age.