A non-invasive blood glucose measuring device and a measuring method using the same are provided. The non-invasive blood glucose measuring device includes a signal emitting module, a delay component, a wave mixed component and a signal processor. The signal emitting module is configured to a detecting signal. The delay component is configured to delay the detecting signal to become a delay signal. The wave mixed component is configured to mix the return signal and the delay signal into a mixing signal, wherein the return signal is the signal that the detecting signal is reflected from an object. The signal processor is configured to obtain blood glucose of the object according to the mixing signal.一種非侵入式血醣量測裝置及使用其之量測方法。非侵入式血醣量測裝置包括訊號發射模組、延遲器、混波器及訊號處理器。訊號發射模組用以發射偵測訊號。延遲器用以延遲偵測訊號成為延遲訊號。混波器用以將偵測訊號自待測物返回的回波訊號與延遲訊號混波成混波訊號。訊號處理器用以依據混波訊號，取得待測物的血醣值。
