What is basal body temperature? Basal body temperature is the body temperature measured after 6 – 8 hours of rest, before getting up, eating or talking, generally based on oral temperature. Basal body temperature can indirectly reflect the ovarian function of women. The basal body temperature of normal women in their reproductive years is slightly lower after menstruation and may be lower on the day of ovulation, after which the basal body temperature rises due to the production of corpus luteum by the follicles and then falls again until the next period as shown above. The basal body temperature can be measured to understand the presence or absence of the corpus luteum and its function, so as to understand the presence or absence of ovulation and to estimate the date of ovulation. It is very important for the diagnosis and treatment of patients with ovarian dysfunction and infertility, and for the observation of the efficacy. Please follow the instructions and doctor’s orders to perform the following items correctly: 1. Have a mercury thermometer available in Fahrenheit, master the reading method and make sure it is accurate. 2, the temperature table on the side of the bed on a small table, every night before going to bed will be waved down the mercury column. 3, every morning after waking up, immediately measure the mouth (shut) body temperature for 5 minutes. If you can take the temperature at a fixed time every morning (5:00~7:00), it is better. It is strictly prohibited to get up, urinate and defecate, smoke, eat, talk, etc. before taking the temperature, and record the temperature in this table after measurement. 4.If you have sex, it should be indicated in the table. 5.Cases such as cold, alcohol, late sleep, insomnia, etc. often affect the temperature. Should be written in each note, for reference. 6.If there is any transient lower abdominal pain, vaginal bleeding, leucorrhoea, increased sensuality or other abnormalities during the cycle. These should be noted in the notes. 7.The start and stop dates of examination, treatment and medication should be indicated in the remarks. 8.A table should be used for each menstrual cycle, starting from the left side of the table, and starting with x table of menstrual periods, the table on the previous page can be used for three cycles, if there is no cycle, it should be recorded continuously. 9.Prediction of ovulation date: Menstrual cycles can be long or short, but the interval between ovulation date and the start of the next menstrual period is relatively fixed, usually around 14 days. The method of projection is to count from the first day of the next menstrual period, not counting the current day, and count down 14 days or subtract 14 days to the day of ovulation. For example, if the menstrual cycle is 28 days, and the first day of the current menstruation is on December 1, then the next menstruation will be on December 29 (December 1 plus 28 days), and then subtract 14 days from December 29, then December 15 will be the day of ovulation. 10, grasp the signs of ovulation: ① the lowest basal body temperature; ② 14 days before ovulation, there will be an increase in leucorrhea, in the form of straining; ③ after ovulation, the body temperature rises 0.2 ~ 0.3 ℃ (i.e. basal body temperature measurement rose 2 ~ 3 frames); ④ vague pain in one side of the abdomen; ⑤ basic body temperature rises 3 ~ 5 days after feeling breast swelling pain. Specialized basal thermometer, 36.7 degrees Celsius (scale 24) is the dividing line between high and low temperatures. (36 degrees – scale 10, 38 degrees – scale 50).