The manifestation of precocious puberty in males and females is different. Female precocious puberty may include breast development, fullness of labia majora, etc. Male precocious puberty may include enlarged testicles, spermatorrhea, etc. It is recommended to consult a specialist. 1. Female precocious puberty: the development of secondary sexual characteristics occurs before the age of 8, such as breast development, nipple areola enlargement and coloring, the emergence of pubic and axillary hair, there may be a thickening of the labia minora, vaginal white secretion and other changes in the external genital organs, the examination can be found in the ovary volume increased with follicular development, the first menstrual period occurs before the age of 10. The first menstruation occurs before the age of 10. There is a sudden increase in growth, overweight or obesity, and early epiphyseal closure. 2. Male precocious puberty: before the age of 9, testicular enlargement, thickening and lengthening of the penis, followed by the appearance of pubic hair and axillary hair, followed by the first spermatorrhea, accompanied by accelerated growth in height and weight, and early closure of the epiphysis of the long bones, and so on. If boys and girls experience precocious puberty, they need to be diagnosed and treated in a timely manner and follow the doctor’s instructions for systematic treatment.