An electrocardiogram patch includes a wiring layer, an upper substrate layer, a lower substrate layer, a plurality of conductive contacts and a plurality of sensing electrodes. The lower substrate layer and the upper substrate layer are bonded to each other such that the wiring layer is fixedly sandwiched between the upper substrate layer and the lower substrate layer, and the upper substrate layer partially exposes a portion of the underlying substrate layer. The sensing electrodes are respectively located on one side of the lower substrate layer opposite to the upper substrate layer, and are respectively connected to the wiring layer. The conductive contacts are respectively located on one side of the upper substrate layer facing away from the lower substrate layer, and are respectively connected to the wiring layer.一種心電圖貼片包含一佈線層、一上基材層、一下基材層、多個導電接點與多個感應電極。下基材層與上基材層彼此相互貼合，使得佈線層受夾合於上基材層與下基材層之間，且上基材層之面積與下基材層之面積不同。感應電極分別位於下基材層背對上基材層之一側，且分別連接佈線層。導電接點分別位於上基材層背對下基材層之一側，且分別連接佈線層。
