The invention belongs to a fast molding technology, and discloses a micro area material component controllable additive manufacturing method. The micro area material component controllable additive manufacturing method comprises the following steps that shape-control structural units of all kinds of shapes, sizes and textures are conveyed to a preset area for being spliced by using a plurality of material conveying devices, then the spliced shape-control structural units are solidified by using a directed energy field, in this way, the shape-control structural units are spliced and solidified layer-by-layer, and additive manufacturing is achieved. By means of the micro area material component controllable additive manufacturing method, the thought that equal cutting is only conducted on materials in a traditional additive manufacturing technology is changed, auxiliary functions of computers and the like in the machining process are fully played, through further classifying on a material section layer area, materials and precision customization of an appoint area are achieved, the difficult problem that point-by-point shape-control and performance-control existing in current additive manufacturing are difficult to achieveis solved, and meanwhile, the efficiency of additive manufacturing is further improved due to simplifying of the same area manufacturing process.