1. Diagnosis: A lump appears on one or both sides of the groin and can reach the scrotum. They appear during crying and activity and disappear during calm sleep. 2. The only treatment is surgery, which is performed after 6 months of age, the earlier the better. 3. Fasting for 6 hours before surgery, because if there is something in the stomach during anesthesia, it will vomit and cause choking and coughing, which is life threatening. 4. The operation takes about 10-15 minutes. The anesthesia will wake up in a short time after the operation (about 5 minutes), but the child will gradually go to sleep, so don’t wake him up at this time, it is better to wake up naturally. 5. Post-operative diet: give liquid after fully awake, you can eat any food you usually like if there is no vomiting. 6. When the child additionally suffers from serious diseases such as heart disease and cannot be operated, he can be treated with hernia belt compression, but this treatment may cause damage to the vas deferens and testicles. It is not recommended. 7. When the lump appears and is painful, it is called an incarcerated hernia and must be treated urgently, with surgery 7 days after a successful manual repositioning and emergency surgery if the repositioning is not successful.