Women ovulation is to hypothalamic-pituitary-ovarian axis articulation, so there are actually many factors that do not ovulate, as follows: 1, mental tension, environmental changes or work stress can cause non-ovulation, which is a functional lesion; 2, organic lesions, the ovaries originally had surgery to remove, the loss of ovaries certainly do not ovulate; 3, polycystic ovaries, polycystic ovaries is not non-ovulation, but sporadic ovulation In general, the lack of ovulation is mostly related to ovarian function, so you may need to go to the hospital to do relevant ovarian function tests, such as hormone 6 tests and anti-mullerian tube tests on the 2nd-5th days of menstruation, which can indicate whether there is ovulation.