Objective:To study the indication and the experiences of Staheli’s slotted acetabular augmentation in the treatment of Perthes disease in children. Methods:Twenty-six patients with Perthes disease were treated by Staheli’s slotted acetabular augmentation. The series consisted of 22 boys and 4 girls(right 18 cases,left 8 cases). According to Catterall’s classification,3 cases were graded as group Ⅱ,12 cases were graded as group Ⅲ,11 cases were graded as group Ⅳ. Results:All patients were successfully followed up for a period from 6 months to 3 years(the mean of 2 years and 1 months),and were assessed clinically with Mckay Criteria and radiologically with Willett assessment. The clinical results showed that the overall excellent or good rate was 98.16%. The radiological results showed that epiphyseal heigh,percentage of acetabular cover and center edge angle significantly increased(P < 0.001),Sharp angle significantly decreased(P < 0.001),the continuity of Shenton’s line and the form of femoral head was obviously improved. Conclusion:Staheli’s slotted acetabular augmentation should be an effective procedure for treating Perthes disease in children.