Abstract: Kaili county is situated in the middle of Guizhou, with an area of 1, 400km2, and a population of 310,000.In 1957, the malarial morbidity was 944 per ten thousand, and the parasite rate was 1,120 per ten thousand. The programme of malaria control has been 玜jrried out in large scale since 1958 and the morbidity and parasite rates dropped down in 1965 to 1 and 3 per ten thousand, respectively. Since 1977 the malaria administration and surveillance in the final stage of malaria eradication have been undertaken all over the county. At present, the leading groups of malaria,control-at conuty, district and commune levels are well established. Health bureau and the. .antiepidemic station of the county, the district hospital and commune health station are responsible formalaria surveillance within the area confined. The system of malaria case detection, presumptive treatment, radical treatment, follow-up; of malaria case/foci are set up. From 1980 to 1982, the annual blood examination rate was above 10% every,year, The annual parasite incidence was between 0.5-0.06 per ten thousand.