The present invention provides an essential oil heating module including a heater, a switch, a sensor and a processor. The switch is used for starting the heater. The heater is used for heating a solid oil piece which is defined on a surface of the heater. The sensor is used for detecting physiological signals to generate detected signals and transmitting the detected signals to the processor. The processor determines whether to start the switch to heat the solid oil piece according to the detected signal. The present invention also provides a wearable device having the essential oil heating module.本發明提供一種精油加熱模組，包括電熱片，電熱片開關，感測器和處理器，該電熱片開關用以啟動該電熱片，所述電熱片用以對位於所述電熱片上的固態精油片進行加熱，所述感測器用於感測生理訊號以生成感測訊號並傳送至所述處理器，所述處理器根據該感測訊號判斷是否啟動所述電熱片開關以便對所述固態精油片加熱。本發明還提供了一種具有該精油加熱模組的穿戴裝置。
