If a 7-year-old girl already has breast development, it belongs to the category of precocious puberty. In this case, you can use the following measures to alleviate: 1, change dietary habits, to eat less high sugar, high fat food, usually eat more vegetables, fruits, eat meat to lean meat; 2, increase the sleep time, do not often stay up late; 3, timely application of drugs to treat, if precocious puberty belongs to the true precocious puberty, timely application of drugs such as Dafylline. If it belongs to pseudo precocious puberty, you can apply the free pill as well as Zhi Bai Di Huang Pill and so on.