Method for distributing bit number attributes to various digital part instances

The invention discloses a method for distributing bit number attributes to various digital part instances, which comprises the following steps of: a plug-in development step: developing a plug-in matched with design software of equipment, and implanting the plug-in into the design software; and a virtual instantiation step: designing the equipment through design software, and performing virtual instantiation on the same parts through plug-ins in the assembly design of the equipment. According to the method, the same parts are virtually instantiated in the assembly design, and the assigned EXCEL table is imported into the plug-in, so that attributes of the parts are added in the assembly design process under the condition that the reference relation of the same parts is not changed, the virtual parts can be directly renamed in a design tree, and the design efficiency is improved. According to the method, engineers can visually know the specific effects of the parts in the design tree, the design efficiency of