The absence of menstruation in summer may be related to endocrine disorders in women, some women have their periods once a quarter, also known as the “seasonal period” in Chinese medicine. Therefore, it may be that the period does not come in the summer. However, in general, there is no obvious relationship between the onset of menstruation and summer. If a woman does not have a period in the summer, she should first go to the hospital for an examination to rule out pregnancy as the reason for not having a period. If pregnancy is not ruled out, an ultrasound examination should be performed to find out the thickness of the endometrium, and if the endometrium is thick, progesterone can be given to make the period come. If the endometrium is thick, progesterone can be given to make the menstrual cycle.