〔Abstract〕 To explore the therapeutic effect and clinical value of classification and treatment of children′s trigger thumb. The clinical data of 128 cases(164 thumbs) of children with trigger thumb were retrospectively analyzed. The author had proposed a new subtype classification based on the Jung′s. The different treatment methods had been applied in specific classification based on Lee′s criteria to evaluate the clinical outcome, and the overall effect could be divided into cure, improvement and ineffective. Then the therapeutic effects were compared respectively. In type I, 18 thumbs were treated with simple manual massage, and 13 thumbs(72.22%) were cured. The remaining 24 thumbs were treated with low-temperature thermoplastic splint external fixation, and 18 thumbs were cured ( 75%). There was no statistically significant difference in the cure rate between the two treatment methods; In type IIa,36 thumbs were treated with low-temperature thermoplastic splint external fixation and 26 thumbs were cured( 72. 22%),13 thumbs were under general anesthesia had undergone tendon sheath release operation,12 thumbs were cured( 92. 31%). There was no statistically significant difference between the two groups in the cure rate; 21 thumbs in type Ⅱb were treated with low-temperature thermoplastic splint external fixation,and 10 thumbs were cured( 47. 62%),the remaining 20 thumbs had undergone tendon sheath release operation,and 18 thumbs were cured( 90%). The cure rate of brace treatment was significantly lower than that of surgical treatment; All 32 thumbs of type Ⅲ had undergone tendon sheath release operation,and 28 thumbs( 87. 5%) were cured after follow-up. For children with trigger thumb,they should be diagnosed and treated correctly according to different types,with strong pertinence and good recovery of thumb function.