【Abstract】 11 cases of confirmed human plague in 1966~1995 in Tibet were reported in this ar ticle. Sick persons 84,death of illness 50, fatal ity rate 59. 52 %, cure rate 40. 48 %. It was in vestigated and verified that 18 Counties were the origins of natural infection, 37 villages were the origins of infection. Area of origins was 40980 square kilometres. It was verified that 3 Counties were blood coagulation posi tive. It was found that Hemalayan marmot was the main source of infection (72. 72% ) and plague infected Tibetansystem sheep (18.18 % ), infected flea (9. 1 % ). The prophylaxis and treatment measures of plague are strengthening guidance of prevention, cure work and organizational measures. Further build and improve the specialized setup of plague prevention and treatment; devote major efforts to publicize the knowledge of plague prevention; carry out prediction and put out the epidemic situation in time.更多还原