Abstract: Based on the theory of semantic space，this paper studies the construction theory of 3D semantic space.The 3D style semantic space is established with the abstract language and color corresponding to each other，based on which a method model of color design is constructed on the ground of 3D semantic space，thus the idiographic technology course through which the color design in the 3D semantic space was realized which enables users to conduct color design with high efficiency according to the rules of semantic matching.Finally，this method has been tested in the color design software through the example of product color design.