Children playing Dafirin playing a year without playing can not be should be based on the child’s physical condition and the parents’ expected height, the decision is guided by a professional doctor. Children playing Dafirin playing is mainly through the inhibition of endometrial growth and estrogen secretion to treat precocious puberty, in order to delay the child’s pubertal development, so as to improve the final height of children. Adverse reactions such as nausea and vomiting, diarrhea and abdominal pain may occur when children are given Dafirin shots. There may also be a small amount of vaginal bleeding in the early stages. Individuals may also have allergic reactions such as itching, rash, and neurovascular edema. These adverse reactions usually resolve quickly with treatment. Parents should observe the changes in the child’s condition and go to the hospital regularly for review. According to the child’s real age, height and bone age, predicted height and parents’ expected height of the child, as well as whether the epiphysis has closed or not, under the guidance of a professional doctor to see whether it is possible to stop playing.