A 7-month-old girl is usually 66cm-70.8cm tall and weighs 7.29kg-9.13kg, and is able to simply pick up blocks and produce monosyllabic words without reference. At 7 months old, babies are able to roll over freely, and some of them can sit independently; in terms of fine motor skills, they can pick up a block and try to play with it; in terms of language, most of the children are able to complete monosyllabic words such as “tick tock”, but they have no reference or specific meaning; they can distinguish strangers, and begin to be afraid of strangers. Generally speaking, the height of female babies at this stage is 66cm-70.8cm, and their weight is 7.29kg-9.13kg. It is recommended that you can add appropriate complementary foods for your baby to ensure the nutritional needs of the body, you can add some rice flour, fruit puree, vegetable juice, etc., in addition to the need to supplement calcium in a timely manner, to promote the development of baby’s bones. There are many more developmental standards for seven-month-old female babies, and it is recommended that children undergo regular medical checkups to accurately assess them so that problems can be detected early.