Abstract: An apparatus is disclosed for generating brain wave-inducing signals and a network system including the same. The apparatus for generating brain wave-inducing signals has a system controller, a data input/output port and a brain wave-inducing signal generating unit. The data input/output port receives digital signals from an external device. The brain wave-inducing signal generating unit generates an audio signal and a light emission signal under the control of the system controller. The present invention is advantageous in that it can be miniaturized by integrating several parts into one through the combination of simple hardware with software, and can receive analog and digital signals from an external device. Further, the present invention is advantageous in that it can increase the variety of signal selection by downloading a suitable brain wave-inducing signal according to the characteristics of users from an external communication network.