AIM: To explore the method and effect of comprehensive intervention on simple obesity of children. METHODS: Six junior middle schools were selected as investigation sites, and students in these schools were chosen as subjects. Three of the schools consisted of intervention group (1,831 cases) and the other three were as control group (2,431 cases). WHO height norm value was used to measure the obesity. The intervention group received two year colony intervention, including dietary adjustment, sport prescription, health education, behavior modification, stimulate acupuncture at ear. The intervention subjects were excess child, obese child, no obese child and their parents. Except for physical examination, the control group was not inflicted on any other factor. RESULTS: The incidence of obesity among the students in the intervention group was reduced from 9.8% to 6.9% (Chi-2 = 9.77, p < 0.01), while that of the control group was increased from 9.9% to 12.3% (Chi-2 = 7.09, p < 0.01) over the 2 year intervention period. After the intervention, the incidence of the two groups showed significant differences. The degree of obesity among the students in the intervention group was reduced from 45.9 +/- 11.8% to 34.2 +/- 11.8% and the differences were significant (u = 29.8, p < 0.001), that of the control group was increased from 46.2 +/- 12.1% to 48.9 +/- 13.7% and the differences was significant (u = 7.27, p < 0.001). Increment of height of students was almost same in the intervention group and control group. Blood total cholesterol, triglyceride, apolipoprotein B and systolic pressure all dropped after intervention, and there was no significant change in the students of the control group. CONCLUSION: The comprehensive intervention of simple obesity for children can effectively reduce the prevalence of obesity, obesity degree and risk factor of cardiovascular disease.

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