A far-infrared emitters with physiological signal detection and method of operating the same is disclosed. A far-infrared beam module is switched on and generates far-infrared beam irradiating to a human body when a control unit starting up a micro detecting module detecting physiological signal of the human body. The control unit is switched off when the time that the far-infrared beam irradiating on the human body reach a presetting period of time, thereby achieving the purpose of energy conservation.一種具人體生理訊號偵測功能的遠紅外線照射器及其操作方法，由一控制單元啟動一微波感測模組偵測到人體之生理訊號後，再啟動一遠紅外線模組發出遠紅外線光束照射於人體，當遠紅外線光束照射於人體的時間達到一預設時間時則關閉控制單元，以達節省能源目的。
