Pediatric trigger finger deformity is a relatively common congenital malformation, most commonly in the thumb, and its incidence accounts for about 2.2% of the congenital malformations of the hand and upper limb, and some scholars statistic that the incidence of the disease is 0.5%. With the adult trigger finger causes more and strain or metabolic diseases related to different, pediatric trigger finger deformity causes are not yet clear, sometimes there is a family history of hereditary disease, most scholars believe that may be due to the thumb flexor tendon tendon sheath congenital stenosis, i.e., the congenital thickening of the A1 slip car caused by the tendon in which the sliding is blocked, and in the long run, sliding blocked proximal end of the flexor tendon hypertrophy was nodular, through the narrow tendon sheath, produce a popping sound, similar to the trigger. When it passes through the narrow tendon sheath, it produces a popping sound, similar to a trigger and gets its name. Congenital trigger finger occurs unilaterally, or occasionally bilaterally, and is often discovered by parents who inadvertently realize that their child’s thumb cannot be actively straightened, and most of these cases are discovered after the age of 1 year. Clinical examination found that the thumb or other finger activities are limited, the interphalangeal joints are flexed, active straightening is limited, passive straightening there is a popping sensation, in the metacarpophalangeal joint palm side of the A1 slide can be touched a hard nodule, pressure pain is not obvious. Although the incidence of pediatric trigger finger is high, there are still many misunderstandings about it in the medical community. Especially in the primary health care institutions of medical personnel, because of the lack of knowledge of the disease, resulting in children misdiagnosis and misdiagnosis, and even cause the joint legacy of dysfunction is not uncommon. Inappropriate rubbing by parents of some children leads to further hyperplasia, hypertrophy and narrowing of the flexor tendon sheath. Prolonged flexion contracture makes the metacarpophalangeal joint hyperextension subluxation, which can also affect the development of the thumb. Trigger finger can be self-healed in a few cases, and those with mild symptoms can be observed first, and a trial splint can be used to keep the thumb in a straightened state, and a few of them can be cured. If conservative treatment is ineffective, we should strive to perform local tenotomy before the age of 3 years, because with the development of the child’s body, the prolongation of the interphalangeal joints, to the end of the school age, the joints will occur to varying degrees of secondary contracture of the skin and joint capsule, and even lead to bunion deformity. At this time, even with surgical treatment, the range of motion of the thumb is often greatly affected.