The present invention relates to a method for manufacturing a clay-fired toy brick and to a method for using the same. According to the present invention, clay is fired at a high temperature so that the toy brick can have sufficient strength and hardness. Also, the toy brick has low moisture absorption properties along with excellent break resistance. In addition, the present invention has an elegant smooth surface along with various colors such as white, jade green, and the like. Accordingly, improved and unique beautiful appearance and excellent sensitive quality are provided when the clay-fired toy brick is assembled. Also, the length of time required for toy brick coupling can be shortened during the assembly and a coupling force can be improved for easy assembly within a short period of time. In addition, the assembly is relatively free from break damages and disassembly is facilitated for high user convenience.