The invention relates to a building method of an industrial model form for clothes draping with deflection, which is characterized in that the method fits the figure type of all age groups and can reflect the shape of basic deflection required by dressing clothes of a human body for the three-dimensional contouring and tailoring of clothes. The method comprises the steps of: firstly, obtaining atleast data of 30 original three-dimensional human bodies; obtaining the data of middle figure types of all age groups through the calculation and statistic analysis of a three-dimensional human body measuring system; classifying the data of the original three-dimensional human bodies according to the data of middle figure types; calculating a standard average form figure type matrix of all age groups; establishing the characteristic matrix of an industrial model form with deflection of each figure type; and obtaining an instantiated model form for clothes draping with deflection. The invention can completely satisfy the positioning of clothes brands and the modeling requirement for coats for designers.