The invention provides a layering processing method and system of a three-dimensional object data, a 3D printing method and device, a computer device and a computer readable storage medium. Through using the characteristic that a material to be cured can display color appearance with the distinction degree after over-curing, a certain distinction degree such as color and structure sudden change (or the step) is needed in the appearance to recognize the object with the different portions carrying information, in the pretreatment, on the basis of the relations of dependence, the three-dimensional attachment model and the three-dimensional main model are mounted, and are subjected to layering processing, an over-curing property is arranged, in the subsequent printing process, on the basis ofthe obtained slicing data, at least one part is sliced to carry out over-curing with the set rule, in the printing process, different exposure strategies are adopted, in one-time printing, the three-dimensional object with recognized assembling information or configuration information is obtained, the production process is simplified, and the production cost is reduced.