The present invention provides an electro-probe which can detect electroactivities of the animal heart. This electro-probe is made of metal material selected from conductivity which are insulated for enhancing signal specification. For rapidly detecting electrophysiological signal from anesthetized animal, a detective process of three-point needle electro-probe is used. This model can reduce the noise from environment to increase the stability of signal by grounding.本發明係提供一種可檢測動物心電圖的裝置及其系統,本發明的電極係使用經絕緣處理的導電金屬材料,因而能大幅提昇量測訊號的專一性,且檢測系統使用三導方式架設針式電極,藉由接地的方式,可降低環境中對於測得電生理訊號的干擾且增加訊號穩定性,使動物如水生動物或陸生動物能在活體麻醉下快速測得訊號。100‧‧‧動物心電生理檢測裝置1‧‧‧三導針式電極14‧‧‧電極針2‧‧‧多芯電子線31‧‧‧數位訊號4‧‧‧訊號輸出端5‧‧‧處理模組51‧‧‧連接口6‧‧‧操作介面