A brain-wave balance apparatus and a method thereof are provided. The brain-wave balance apparatus includes multiple detecting electrodes, an EEG analyzer, a signal processor and an audio player. The detecting electrodes receive EGG. The EEG analyzer determines which one of α, β and γ waves to which the frequency domain belongs, to generate a frequency determination result. The signal processor generates a simulated signal, which is one of α, β and γ waves, according to the frequency determination result. The simulated signal incudes fundamental and harmonic wave of one of α, β and γ waves. In addition, the fundamental or harmonic wave of the simulated signal overlaps with the fundamental wave corresponding to the frequency determination result. The audio player plays the simulated signal. Accordingly, the mood can be changed, and the emotion can be enhanced.本發明提供一種腦波平衡裝置及其方法。腦波平衡裝置包括偵測電極、腦波分析器、訊號處理器及聲音播放器。偵測電極用以接收腦波訊號。腦波分析器耦接偵測電極，並用以判斷腦波訊號的頻域屬於α波、β波及γ波中的至少一者，以產生頻域判斷結果。訊號處理器連接腦波分析器，並用以依據頻域判斷結果產生α波、β波及γ波中至少一者的模擬訊號。而此模擬訊號包括α波、β波及γ波中至少一者的主波和諧波，且模擬訊號的主波或諧波與頻域判斷結果對應的主波重疊。聲音播放器耦接訊號處理器，並用以播放模擬訊號。藉此，可改變心情並增進情緒。
