The present invention relates to a double-layer melon-fruit tissue optical property nondestructive detection method based on continuous wave and a double-layer melon-fruit tissue optical property nondestructive detection apparatus based on continuous wave. A purpose of the present invention is to real-timely and nondestructively obtain the absorption coefficient [mu]a and the reduced scattering coefficient [mu]s' of melon-fruit peel and flesh. The technical scheme is that the double-layer melon-fruit tissue optical property nondestructive detection method based on the continuous wave is characterized in that under an incidence light source inclining condition, the diffuse reflection hyperspectral images of a sample at different positions are scanned and collected through a hyperspectral imaging system, and the optical property information of the first layer tissue contained in the diffuse reflection hyperspectral image is subjected to inversion calculation through a reverse finite element method so as to obtain the average absorption coefficient [mu]a1 and the reduced scattering coefficient [mu]s1' of the scanned region of the first layer tissue. The apparatus of the present invention comprises a hyperspectral imaging system, a light source system, and a sample conveying device.