We report a method to construct a three-dimensional integrated structure of microcomponents (MC) using water/oil (W/O) interface as a template. By forming a W/O interface at a specific part of a template to define the size and shape of the area to which MCs adsorb, it became possible to form an integrated structure of MCs, such as photofabricated parts and microbeads, with a high degree of freedom. We also demonstrated immobilization of MCs using a photo-crosslinking gel in an aqueous solution to remove the assembled structure out of the template.