If the uterus is small in size, it usually depends on the development of the ovaries. If the ovaries function normally, estrogen and progesterone are well secreted, and the endocrine regulation is normal, and the uterus is simply small in size, it may be due to congenital factors, hereditary factors or individual differences. If the uterus is small in size, it can be treated accordingly with estrogen under the guidance of a doctor, which can improve the size of the uterus. If a patient with a small uterus has normal menstrual cycles and normal ovulation, it is also possible that normal fertilization will not be affected, and no special treatment can be carried out in the clinic.