Congenital dysplasia and low estrogen secretion in the body during the developmental period of the body can lead to a small uterus. If the uterus is only slightly small, there will not be too big a problem. If the deviation is large, it will directly affect the endocrine function of the ovaries, resulting in irregular menstruation, long cycles, and in serious cases, amenorrhea, causing difficulties in conception and primary infertility. After the patient with small uterus is pregnant, if the fetus is too large it is easy to have hypoxia, which affects the healthy growth of the fetus. Progesterone treatment can be chosen for small uterus, which can be taken on the first day of menstruation, for 21 consecutive days, for three cycles, under the guidance of a regular doctor. Small uterus also need to eat a reasonable diet, eat more estrogen-containing foods, such as honey, soy products, dairy, can promote the body’s estrogen secretion, diet is only an auxiliary effect, the effect is not obvious, it is best to carry out ultrasound examination, symptomatic treatment.