MODULAR ROBOT SYSTEM

A modular robot system can be formed by assembling a plurality of cube type unit robots. The modular robot system includes N cube type unit robots, wherein: one of the N cube type unit robots serves as a central control terminal, the cube type unit robot serving as the central control terminal assigns a distinguishable ID number to each of the N cube type unit robots; each robot including a cube-shaped housing, a step motor and a control unit installed inside the housing; the housing has one surface including a mounting groove to allow a rotational body rotating by a rotation shaft of the step motor to be mounted therein, and the other surface including a connection groove in the same shape as the mounting groove; and different cube type unit robots can be connected to each other by means of a connection body mounted in the connection groove.