In women with irregular periods, the duration of delay is variable and can be about 10 days or up to 1-2 months, or even longer. The postponement of menstruation is mainly related to the causes that cause women to have irregular menstruation. If it is caused by strain, irregular life, mental stress, etc., attention should be paid to maintaining a regular life and adjusting the mood appropriately, which will restore the normal menstrual cycle in a shorter period of time. If the problem is caused by changes in the level of hormones secreted by the ovaries, endocrine disorders such as polycystic ovary syndrome, or endocrine disorders such as hyperthyroidism or hypothyroidism, menstrual disorders may occur for 3 months or more than half a year, and it is necessary to go to the hospital for ultrasound and sex hormone measurement in a timely manner. According to the hormone level to take cyclic treatment or actively treat the primary disease, the irregular menstruation will also gradually recover. In conclusion, women who have delayed menstruation must actively search for the cause and actively treat it to avoid delaying the condition.