The standard height of a 6-week-old boy is 117.7cm and the standard weight is 21.26kg. The height of a 6-week-old boy between 114.6-120.9cm is approximately normal and can be closely observed. If a 6-week-old boy’s height is lower than 109.1cm, the child is considered to be short. At this time, it is necessary to go to the hospital for a bone age test, which can truly reflect whether the child’s height is normal or not. If the child’s height is roughly within the same level as that of the bone age, it is considered normal; if the child’s height is significantly lower than the rise of the bone age, it is considered short and requires active intervention. 6 weeks of age is a critical period for children’s growth and development, so it is important to ensure a balanced and reasonable diet, appropriate daily bouncing sports activities, and sufficient sleep to help maintain a normal height and weight.