Purpose: To investigate the current status of anorexia among junior high school students inDaofu County and to conduct an anorexia intervention study based on cultural background. METHODS:The anorexia questionnaire and self-efficacy questionnaire were used to investigate the anorexia statusof 582 junior high school students in two middle schools in Daofu County, Ganzi-Tibetan AutonomousRegion; 22 junior high school anorexics were screened, and short-focus group counselling was used toconduct a randomised control group pre- and post-test intervention study. Results: (1) The total scoreof anorexia and the scores of each dimension were: total score of anorexia (2.40±0.75), cognition ofanorexia (2.25±0.83), emotion of anorexia (2.69±0.94), and behaviour of anorexia (2.42±0.79); (2) The total number of students with anorexia in the two middle schools was 129, and the detection rate ofanorexia was 22.2%, of which the number of students left in middle schools with anorexia was 70, andthe detection rate of anorexia was 32.6%. detection rate was 32.6%; (3) there was a significant differencebetween left-behind and non-left-behind junior high school students in terms of total anorexia score,anorexia sentiment, anorexia behaviour, and anorexia behaviour (p < 0.001); (4) in terms of gender,junior high school girls’ anorexia sentiment was significantly higher than that of girls and boys (p <0.05), and there was no statistically significant difference between other dimensions of anorexia in termsof gender; (5) in terms of grade level, the junior high school first-years, junior high school secondyears,and junior high school third-years were significantly higher in terms of (p < 0.05), the total scoreof anorexia was significantly higher than that of junior high school students, and the anorexia of juniorhigh school and junior high school students was significantly higher than that of junior high schoolstudents; (6) at the level of academic performance, the anorexia cognitive scores of the students in thedownstream of the performance were significantly higher than that of the students in the upper reachesand the middle reaches of the performance (p < 0.05); (7) after the intervention, there was a statisticallysignificant difference (p < 0.05) in the total anorexia score of the experimental group and the controlgroup. significant difference between the experimental group and the control group (p < 0.001), and thedifference between the total anorexia scores of the experimental group and the pre- and post-tests wassignificant (p < 0.001), and the total anorexia score of the experimental group was significantly reduced;(8) after the intervention, the scores of anorexic behaviours, anorexic emotions, and anorexic cognitionof the experimental group were all significantly reduced (p < 0.05), and the scores of self-efficacy wereimproved. Conclusion: the problem of anorexia is more prominent among junior high school students inKamba region, among which the detection rate of anorexia among left-behind students is higher; shortfocusgroups can enhance students’ self-efficacy and effectively improve the anorexia psychology of juniorhigh school students.