The present invention comprises the steps of recognizing the toy plate of the camera unit of the user device; generating, by a color recognition unit of the user device, first color information about a color colored in each of at least one toy piece disposed on the recognized toy plate; extracting the toy identification information of the toy plate from the recognized toy plate by the identification information extraction unit of the user device; The image generating unit of the user device extracts the first assembly image corresponding to the toy identification information from the memory unit of the user device, and the second color information and the at least one toy piece colored using the first assembly image are assembled generating an assembly image; Displaying a second assembly image in augmented reality through the display unit of the image reproducing unit of the user device of the user device; displaying each of the second assembling images generated for each of the toy pieces by the image generating unit of the user equipment in augmented reality through the display unit of the user equipment in the assembly order of the toy pieces predetermined by the assembly guide unit of the user equipment; And the actual assembly image of the toy piece is obtained through the camera unit of the user device, the image for each toy piece is obtained by the image processing unit of the user device, and the coupling angle of the toy piece calculated by the coupling angle calculation unit of the user device. and calculating and displaying the evaluation score by the evaluation score calculating unit of the user device from the overlapping area between the toy pieces calculated by the overlapping area calculation unit of the user device; will be.
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