A neck-mounted electrocardio detection device comprises a housing having a first surface and a second surface opposing to each other, a first electrode and a second electrode positioned on the first surface, an attachment element combined with the housing for attachment to a users neck, and an electrocardio signal capturing circuit to cooperate with the first and second electrodes for capturing electrocardio signals. When the user wears the device through the attachment element, the housing is provided in front of the torso of the user, and when the users hand applies a force on the housing toward the torso, the housing is fixed between the hand and body, and a stable contact between the first and second electrodes and skins in front of the torso is generated, thereby enabling the device to enter a state for capturing electrocardio signals.一種頸戴式心電檢測裝置,包括一殼體,具有相對的一第一表面以及一第二表面,一第一電極以及一第二電極,位在該第一表面上,一依附元件,與該殼體相結合,用以依附至一使用者的頸部,以及一心電訊號擷取電路,以配合該第一及第二電極而進行一心電訊號擷取,其中,當該使用者透過該依附元件而穿戴該裝置時,該殼體被設置於使用者軀幹的前方,以及當使用者的手部以朝向軀幹的方向對該殼體施力時,該殼體被固定於手部及軀體之間,並在該第一及第二電極與軀幹前方皮膚間產生一穩定接觸,進而使該裝置進入一可擷取心電訊號狀態。10‧‧‧頸戴式心電檢測裝置12‧‧‧殼體14‧‧‧依附元件16‧‧‧電極