Luteal insufficiency, mainly manifests the following three aspects: first, the patient’s body temperature does not rise obviously after ovulation, or the high phase of body temperature is maintained for a relatively short period of time. In general, after ovulation, the patient’s body temperature will rise 0.3-0.5 degrees, and in the state without pregnancy, the high phase body temperature usually maintains about 14 days to fall, and then menstruation will come. If the luteal function is insufficient, the patient’s body temperature will rise less than 0.3 degrees or rise more than 0.3 degrees, but the maintenance time is less than 12 days. Secondly, the patient mainly shows shortened menstrual cycle, prolonged menstrual period, low menstrual volume, or even irregular vaginal bleeding. This is mainly caused by insufficient luteal function and disturbance of estrogen and progesterone levels. Third, it mainly manifests as habitual miscarriage and embryonic arrest. Because the fertilized egg needs the support of estrogen and progesterone levels after it is laid, if the corpus luteum does not function well and the estrogen and progesterone levels are low, it will easily cause the embryo to stop developing.