Abstract: In this study, we designed a wearable patch-type ECG sensor (WPES), which is mainly composed of the electrodes, an ECG acquisition unit, a Bluetooth unit, and a power supplies module. By using BMD101 chip as the core of ECG acquisition, the WPES can communicate with smart phones through Bluetooth low energy (BLE). The WEPS can be well used in monitoring epileptic seizure prediction, based on its advantages of simplification of circuits, miniaturization, low-power consumption, light-weight, convenience of wearing, high-comfort etc.