The average weight of a 10-year-old boy is 33.74 kg, and when it is lower than 27.93 kg, it is considered thin, and when it is lower than 23.40 kg, it is considered low weight. When the weight is low, we need to analyze the reason and correct it in time. When the weight is more than 51.38Kg, it is overweight, and when it is overweight, it is also necessary to ask the doctor to help intervene to correct and adjust.