The delayed menstruation for 10 days without intercourse may be caused by endocrine disorders, or may be related to diseases such as decreased ovarian function. When this phenomenon occurs, it is recommended to promptly consult a doctor for the appropriate examination, clear diagnosis and take targeted treatment. 1, endocrine disorders: if the recent mental stress, poor rest, weight loss and other factors lead to delayed menstruation, generally adjust the work and rest can be restored, but also under the guidance of the doctor oral medicine such as motherwort granules, progesterone capsules to regulate the menstrual cycle; 2, ovarian function decline: pelvic surgery History, as well as autoimmune diseases, genetic factors and other causes of ovarian function decline, can affect the pregnancy rate of women, some patients can be manifested as abnormal menstrual periods, such as menstrual scarcity, amenorrhea, etc., need to follow medical advice oral ovulation drugs, such as clomiphene citrate tablets, letrozole tablets, etc. for treatment; 3, other: if suffering from polycystic ovary syndrome, hyperthyroidism, pituitary tumors and other diseases, can cause delayed menstruation or even amenorrhea. In patients with hyperthyroidism, the thyroid gland synthesizes and releases too much thyroid hormone, resulting in hyper-metabolism and sympathetic excitement, which needs to be treated with oral methimazole tablets and, if necessary, total thyroidectomy or subtotal thyroidectomy. Pituitary tumors are tumors of the adenohypophysis and pituitary gland, as well as the remnant epithelial cells of the embryonic craniopharyngeal sac, and require surgical excision.