The instant disclosure provides an auxiliary thermometer and a thermal detecting method thereof. The axillary thermometer includes a carrying module, a temperature measurement module, a control module, and a fixed structure. The temperature measurement module includes a first temperature measurement unit and a second temperature measurement unit. The first temperature measurement unit and the second temperature measurement unit are disposed on the carrying module. The control module disposed on the carrying module and electrically connected with the first temperature measurement unit and the second temperature measurement unit. The carrying module disposed on the fixed structure to dispose on the human body. Therefore, the present disclosure improves the accuracy of the measured value and monitoring in a long time.本發明公開一種腋下體溫量測裝置及其體溫量測方法。腋下體溫量測裝置用於量測在一人體的一手臂與一軀幹之間的一人體溫度,其包括一承載模組、一溫度量測模組、一控制模組及一固定結構。溫度量測模組包括一設置在承載模組上的第一溫度量測單元以及一設置在承載模組上且與第一溫度量測單元彼此相互對應設置的第二溫度量測單元。控制模組設置在承載模組上且電性連接於第一溫度量測單元及第二溫度量測單元。承載模組設置在固定結構上,且通過固定結構以設置在人體的手臂上或者軀幹上。藉此,本發明達到了提高溫度量測值的準確性及能夠長時間監控的效果。2‧‧‧溫度量測模組21‧‧‧第一溫度量測單元22‧‧‧第二溫度量測單元3‧‧‧控制模組31‧‧‧處理單元32‧‧‧訊號傳輸單元33‧‧‧儲存單元5‧‧‧電力供給模組P‧‧‧電子裝置
