The small uterus usually refers to the small size of the uterus found during gynecological examination, which may be congenital uterine dysplasia, may be a temporary phenomenon affected by drugs, or may be related to some diseases, but need to go to the hospital for examination to clarify the specific causes. 1, uterine dysplasia: chromosomal abnormalities, genetics and other factors can cause patients with uterine dysplasia, so that the uterus volume is small, the common beginning of the uterus and infantile uterus two The situation. The beginning of the uterus is generally manifested as a very small uterus, no endometrium, solid structure, and no menstrual flow. Infantile uterus is a condition in which the uterus stops developing at some point between the late fetal period and puberty, resulting in uterine dysplasia, which is usually characterized by a small uterus with a thin endometrium and no or very few menstrual periods. Uterine dysplasia is usually difficult to cure; 2, endocrine abnormalities: the development of the uterus requires the stimulation of estrogen and progesterone, if the patient does not produce enough estrogen and progesterone during the growth and development process, it may lead to poor development of the uterus and make the uterus small in size. At this time, patients need to use hormonal drugs for treatment under the guidance of doctors. 3. Drug factors: The uterus is affected by estrogen and progesterone, and when the level of estrogen is too low, it can make the uterus smaller. If drugs that inhibit estrogen secretion are used in the treatment of certain diseases, the uterus may temporarily shrink during the use of drugs. There is no need to be nervous in such cases, as the uterus will return to its normal size when the effects of the medication wear off. Some women with a slightly smaller uterus can still conceive normally and it usually does not affect pregnancy or delivery. If the menstrual cycle is normal, you can try to conceive without worrying too much or rushing into medical intervention.