If a woman of childbearing age takes CMF, which refers to clomiphene, the possibility that the patient will give birth to twins cannot be ruled out. clomiphene is a kind of ovulation-promoting drug, which is helpful in promoting the ovaries to carry out ovulation and improve the probability of pregnancy occurring, and if the patient’s body is more sensitive after the use of this kind of drug, and it appears that there are two or more mature follicles in one menstrual cycle, and the eggs are eliminated simultaneously at the time of ovulation, and all of them are able to form fertilized eggs, there will be the growth and development of twins. However, it should be noted that this drug is mainly used for ovulation disorders or polycystic ovary syndrome and other diseases caused by infertility, for the normal ovulation of female patients is not suitable for use, indiscriminate use of this drug is likely to cause excessive stimulation of the ovaries, which will cause some adverse reactions, will cause some damage to the health of female patients.