The weight of 7-month-old female babies usually ranges from 7.29kg to 9.13kg, while that of male babies ranges from 7.87kg to 9.77kg. Baby’s weight is affected by nutrition, sleep and other conditions. After birth, if the baby’s nutrition is good and the growth environment is suitable, the baby’s weight gain will be faster, while on the contrary, if the nutrition is poor and the growth environment is poor, the baby’s weight gain will be slower. Generally speaking, the weight of a 7-month-old female baby is 7.29kg-9.13kg, while that of a male baby is 7.87kg-9.77kg. It is recommended that you can add supplemental food for your baby to ensure the nutritional needs of the body, you can add some rice flour, fruit puree, vegetable juice, etc. In addition, you also need to supplement calcium in a timely manner to promote the development of your baby’s bones. If the weight is abnormal, it is recommended to consult a doctor in time to clarify the cause of the disease with the help of the doctor and carry out targeted treatment or therapy.