A mobile ECG healthcare platform is developed. The wireless prototype, which consists of the single lead electrode, is developed with commercial discrete components and can demo a patient centric medical environment. The platform uses an Android phone as a gateway to transmit the recorded ECG data back to the cloud server: Bluetooth for ECG sensor to the Android phone, while 3G/WiFi for the Android phone to the cloud server. With wireless technology on the platform, patient can go outside for common life, instead of being tied at home or hospital. Another advantage to use an Android phone as a hub is its computing power. We can put several light-weighted monitoring functions in the phone to provide important services such as emergency alarm and location information. After the mobile hub, we transmit the data onto our cloud server. The server in the cloud can analyze recorded ECG signal in more details with accurate algorithms and advanced analysis. Therefore, cloud server plays an important role in the platform that let the whole system has diagnostic grade. The demonstration can show how the whole platform works. On one hand, an Android phone/ tablet will be used to monitor the ECG waveform in real time. In addition, the application on the Android device can provide some valuable services we mentioned above. On the other hand, a Windows laptop will be use to show the analyzed results of the cloud server. Further more, we also plan to demo the cloud server by using browsers (IE, Firefox, Chrome, Safari and Opera). This can reveal that, our platform can apply to every operation system (Windows, Linux, Mac OS, iOS and Android). Incidentally, the sensor and the application program are very low power. Hence users can monitor their ECG continuously for 24 hours by a wearable sensor (half of the credit card size) and their general Android phones.