The utility model relates to a body surface non-trauma biological tissue detection device. The body surface non-trauma biological tissue detection device comprises a Fourier spectrometer and a group of additional device. The additional device comprises an optical fiber sampling accessory, an optical fiber coupling component and an infrared detector component. With the body surface non-trauma biological tissue detection device, the user can detect the variance of living biological tissue molecular structure in the early period, and the user doesn't have any discomfort feeling in the testing. The additional device is in the left side, the right side or middle of the Fourier spectrometer. The body surface non-trauma biological tissue detection device has a simple operation and is quick and accurate, and the body surface non-trauma biological doesn't have any harm to the human body.