Objective: To understand epidemiological characteristics of echinococcosis among children and adolescents in Lhasa, and to provide basic data and theoretical support for echinococcosis prevention and control. Methods: The data of echinococcosis screening in Lhasa in 2017 were collected from 3-18 years old, and portable ultrasound and serum echinococcosis antibody tests were used for screening, and the diagnosis was made based on the epidemiological history and clinical manifestations. Results: The overall echinococcosis detection rate of children and adolescents aged 3-18 years in Lhasa was 0.12% (114/95 835).Among different age groups, the echinococcosis rate of children and adolescents aged 16 to 18 was the highest (0.17%). Among the population with different education levels, the echinococcosis rate of children and adolescents with primary education level was the highest (0.45%).The echinococcosis detection rate of herdsmen was the highest among different occupational groups (0.59%). Among the population with different living patterns, echinococcosis rate was the highest (0.70%) in "settled in winter and nomadic in summer" group. The rate of echinococcosis of children and adolescents were the highest in "nomadism" group and "half farming and half nomadism" group (both 0.20%) among different family production mode. Among different endemic counties, the echinococcosis detection rate of children and adolescents in Dangxiong county and Mozhugongka county were the highest, both of which are 0.18%.All the above differences are statistically significant(χ2=16.77,23.76,69.76,16.49,14.74,25.25,P<0.01).There was no significant difference in echinococcosis detection rate between boys and girls(P>0.05). Conclusion Echinococcosis is more likely to be detected in children and adolescents who are older and have a lower education level, whose production and lifestyle are involved in animal husbandry, and who live at a higher altitude. Therefore, the prevention and control of echinococcosis among children and adolescents, especially the health education, should be the focus of the government’s work.