When the corpus luteum forms after ovulation, it stimulates the temperature center, causing the basal body temperature to rise. Generally, the basal body temperature is above 36 degrees 8, and most of them are around 37 degrees, but the high temperature will not exceed 37 degrees 5, and the low temperature will not be lower than 36 degrees 8. This is a normal phenomenon, and this high temperature state will last for about 14 days clinically, and when the body temperature suddenly drops, menstruation will come in about 24 hours clinically. If after ovulation, the body temperature appears high and low, it is likely to be caused by insufficient luteal function. It is recommended that progesterone can be supplemented after ovulation, the commonly used progesterone is progesterone gel pills, 1 time/day, 2 capsules/time, for 10 days, it is recommended to take orally before going to bed.