It is not normal for children not to gain weight for a year, suggesting growth retardation. Weight is the combined weight of the body’s tissues, organs and fluids, and is an important indicator of a child’s nutritional status. Children’s weight increases steadily from the age of two until puberty, at a rate of about 2kg per year, which can be roughly estimated based on age x 2 + 8kg. Children are at an important stage of growth and development, and weight reflects the child’s recent nutritional status. If the weight does not increase for a long time, it suggests that the child’s growth is delayed, which may be related to intestinal diseases, malnutrition and other reasons. If you find that your child has not gained weight for a long time, you should be more vigilant and increase the nutritional supply. If necessary, go to the hospital for consultation and treatment under the guidance of the doctor.