The utility model relates to a temperature measuring device, which is suitable for installation in a mobile device and comprises a temperature measuring unit, a connecting unit and a control unit.The temperature measuring unit is used to measure the temperature of one of the objects to be measured.The connection unit correspondingly connects the mobile device to obtain a power source from the mobile device.The control unit is coupled with the connecting unit and the temperature measuring unit to receive the temperature measured by the temperature measuring unit and output a temperature signal to one of the mobile device applications through the connecting unit.Therefore, by installing the temperature measuring device on the mobile device, the portability of the temperature measuring device can be increased.一種溫度量測裝置,其適於安裝於一行動裝置配合並包括一溫度量測單元、一連接單元及一控制單元。該溫度量測單元用以量測一待測對象之一溫度。該連接單元對應連結該行動裝置,以自該行動裝置取得一電力來源。該控制單元與該連接單元與該溫度量測單元耦接,用以接收該溫度量測單元所量測之該溫度,並透過該連接單元輸出一溫度訊號至該行動裝置之一應用程式。因此,透過將溫度量測裝置安裝於行動裝置上,便可以達到增加溫度量測器的可攜帶便利性。