Girls stay up late will cause certain harm to the body, commonly in obesity, hair loss, pregnancy difficulties, memory loss, decreased immunity, endocrine disorders, breast disease, gynecological inflammation, uterine fibroids, and damage to kidney function and other hazards, the specific analysis is as follows: 1, obesity: women stay up late for a long time will cause muscle loss, increased hunger, resulting in a decrease in the body’s basal metabolic rate, as well as overeating, prone to Obesity phenomenon; 2, hair loss: long-term late night can easily lead to insufficient blood supply to the scalp, increased sebum secretion, resulting in shrinkage of hair follicles, scalp pore blockage, etc., resulting in the phenomenon of hair loss; 3, skin deterioration: after long-term late night, it will affect the state of women’s skin, if the previous regular rest, smooth and delicate skin, after late night, the skin will become rough, yellow, acne; 4, endocrine disorders. Long-term stay up late will cause endocrine disorders in women, affecting the physiological cycle, resulting in menstruation and ovulation disorders, which can easily lead to difficulties in pregnancy; 5, memory loss: women stay up late for a long time, the brain will not get rest, resulting in neurological disorders, the phenomenon of memory loss; 6, immune system decline: long-term stay up late will make various organs of the body do not get sufficient rest, which will cause women’s resistance to decline and 7, endocrine disruption: long-term late night will make women’s endocrine dysfunction, so that the ovaries, ovulation cycle, menstruation and progesterone secretion abnormalities; 8, breast disease: for long-term night work or often stay up late patients, it is possible to destroy their own physiological rules, triggering anxiety, irritability and other bad mood, in the long run will increase the risk of breast disease; 9, gynecological diseases. Staying up late for a long time will make the body’s immunity decline, making it easier for germs to invade the body, thus inducing cervicitis, vaginitis, pelvic inflammatory disease and other gynecological lesions; 10, damage to kidney function: staying up late for a long time will put the body under high load, aggravating the filtering function of the kidneys, which will easily lead to kidney function damage in the long run. In summary, girls stay up late will have a greater adverse effect on the body. It is recommended that female patients should try to maintain a regular routine and avoid staying up too late.