A glucose meter includes a light source, light detector, a blood glucose data storage device and a processing unit. The light source is used to illuminate a blood to be detect of a living body. The light detector is used to receive a reflected light reflected from the blood to be detect illuminated by the light source. The blood glucose data storage device is used to store an optical character information corresponding to various blood glucose concentrations. The processing unit is coupled to the light detector and the blood glucose data storage device, and is used to compare an optical character of the reflected light with the optical character information corresponding to various blood glucose concentrations to measure a blood glucose value of the blood to be detect.一種血糖機,包括光源、光檢測器、血糖資料儲存裝置及處理單元。光源用以照射生物體的待檢測血液。光檢測器用以接收由光源照射待檢測血液所反射的反射光。血糖資料儲存裝置用以儲存各種血糖濃度所對應的光學特性資料。處理單元耦接光檢測器及血糖資料儲存裝置,且用以將反射光的光學特性與各種血糖濃度所對應的光學特性資料進行比對,以量測待檢測血液的血糖濃度值。100...血糖機102...光源104...光檢測器106...血糖資料儲存裝置108...處理單元110...待檢測血液112...光線114...反射光116...顯示裝置118...光分析器120...光控制器122...血管
