To provide a method for quantitatively analyzing the extent of coherency of pile parts in a plush fabric with an image analyzer without a personal error.

This analytical method is to determine the ratio of coherency of pile parts by image analysis an comprises taking a picture of a surface photograph of the raised fabric using an image processing apparatus at a light irradiation angle θ° determined by a relational expression of tanθ={the pile length (mm) of the raised fabric}/13.9, processing the resultant surface photograph into a binarized image and carrying out the image analysis.