One-week-old babies do not grow much meat may be due to insufficient nutritional intake, indigestion, etc. At this time, adequate nutritional intake and medication are needed to promote normal growth of the baby’s weight. If you don’t add reasonable complementary food to your baby or the diet structure is too single, it may lead to insufficient nutritional intake of your baby, resulting in failure to grow weight normally. At this time, it is necessary to pay attention to a balanced diet and provide foods with high protein content, such as eggs and lean meat, to promote their weight growth. If the baby’s digestive function is not good, it is difficult to absorb the nutrients properly even if the food intake is high. At this time, you need to follow the doctor’s advice to use probiotics such as Bifidobacterium bifidum to regulate your baby’s intestinal function and promote weight gain. When the one-week-old baby does not grow meat, it may also be caused by other diseases, it is recommended to go to the hospital in a timely manner, under the guidance of the doctor to clarify the specific causes, to take the appropriate methods of treatment, and avoid unauthorized use of medication.