An electrode device has a conductive body, a silver layer above the conductive body, a silver compound layer above the silver layer, a liquid absorbing and releasing element, a shielding element covering an upper surface and a portion of a side surface of the liquid absorbing and releasing element, and a moving mechanism configured to allow the shielding element to move between at least two positions.一種生理電極裝置包含一導電本體、位於該導電本體上方的一銀層、位於該銀層上方的一銀化合物層、位於該銀化合物層上方的一液體吸附暨釋放元件、包覆該液體吸附暨釋放元件之上表面與部分側面的一阻擋元件、及用以使該阻擋元件於至少兩位置之間往復的一移動機構。
