Fever after ovulation is mostly considered to be related to changes in hormone levels in the body, but also to be alert to the occurrence of pneumonia, urinary tract infections and other infectious diseases. Due to the rise in the level of progesterone after ovulation, which will stimulate the thermoregulatory center, making the body basal body temperature rise 0.3 ~ 0.5 ℃, so some women will have a low fever, at this time, no special treatment, low fever lasts for 1 ~ 2 days can be recovered on their own. If the woman also combined with coughing, coughing up phlegm and other respiratory symptoms, we should be vigilant about the occurrence of pneumonia; if combined with urinary frequency, urinary urgency, urinary pain and other symptoms of urinary stimulation, we should be vigilant about the occurrence of urinary tract infections. If a woman’s fever persists after ovulation, it is recommended that she go to a regular hospital, complete the blood routine, urine routine, chest CT and other related examinations, and then actively treat the cause under the guidance of the doctor.