The invention relates to an individual garment pressure measuring method based on dummy testing. The individual garment pressure measuring method comprises the following steps of testing the tensile property of a fabric for manufacturing pressure garments to obtain a stress-strain curve of the fabric; adopting the pressure garments of various specifications, testing the contact pressure of multiple parts on a dummy garment pressure testing system capable of changing the size, selecting the tested volunteers of various body types, and testing the contact pressure of multiple parts correspondingto the tested volunteers; establishing a mapping model of the garment pressure on the real human body and the garment pressure tested on the dummy garment pressure testing system; carrying out non-contact three-dimensional human body scanning on the subject, carrying out Fourier curve fitting on each girth cross section, and calculating the perimeter of each cross section contour and the curvature of each pressure test point according to an obtained fitting result; substituting the result into the mapping model to obtain a clothing pressure prediction model of each part of the individual. According to the invention, the garment pressure generated when the same type of garment is worn on human bodies with different three-dimensional sizes can be measured and calculated.