This creation system discloses a kind of basal body temperature measurement system, this system includes a thermometer and a data operation device. Thermometer measures the time according to a basal body temperature to carry out measuring temp to user, and shows body temperature data in the first display unit of thermometer, more can be by body temperature data transmission to data operation device. Data operation device may include processing unit, input unit, the second transmission unit and screen, input unit measures the time to input basal body temperature, second transmission unit to transmit basal body temperature measure reminder time to thermometer or from thermometer receive body temperature data, when processing unit judges body temperature data for basic body temperature, storage base body simultaneously executes operation according to a plurality of basal body temperatures stored to generate a statistics as a result, screen is to show statistical result.本創作係揭露一種基礎體溫量測系統，此系統包含一溫度計以及一資料運算裝置。溫度計依據一基礎體溫量測時間以對使用者進行溫度量測，並在溫度計之第一顯示單元顯示體溫資料，更可將體溫資料傳送至資料運算裝置。資料運算裝置可包含處理單元、輸入單元、第二傳輸單元以及螢幕，輸入單元用以輸入基礎體溫量測時間，第二傳輸單元用以傳送基礎體溫量測提醒時間至溫度計或從溫度計接收體溫資料，當處理單元判斷體溫資料為基礎體溫時，儲存基礎體並根據已儲存之複數個基礎體溫執行運算以產生一統計結果，螢幕用以顯示統計結果。
