Disclosed is a system for measuring cerebral cortex excitation and inhibition capacity in a headache patient, which is provided to analyze the cerebral cortex excitation and inhibition capacity in patient's brain. The measuring system includes: at least one storing unit used to store at least one judgment model； at least one external electric stimulation unit used to be connected to patient's skin and output a plurality of pairs of low stimulation electric signals； a plurality of measuring units used to sample and acquire the EEG signals sent from the cerebral cortex of the brain portion and responding to the low stimulation electric signals, wherein the EEG signals include at least one first reaction signal and at least one second reaction signal； a processing/analysis unit used to perform a noise-reducing process of the EEG signal, so as to obtain at least one excitation characteristic value and at least one inhibition characteristic value； and a judging unit used to output comparison information.一種用於頭痛疾患的大腦皮質興奮與抑制能力量測系統，供分析一患者的一腦部中大腦皮質的興奮與抑制能力，該量測系統包括：至少一個儲存單元，供儲存至少一組判斷模型；至少一個外部電刺激單元，供連接至該患者的皮膚及輸出複數成對的低刺激性電訊號；複數個量測單元，抽樣擷取上述腦部的大腦皮質響應上述低刺激性電訊號所發的腦波訊號，其中上述腦波訊號包括至少一第一反應訊號和至少一第二反應訊號；一處理分析單元，供減噪處理上述腦波訊號，獲得至少一興奮特徵值與至少一抑制特徵值；及一判斷單元，輸出一比對資訊。
