In the recent years, the rapidly developing Mobile Health （mHealth） has become the hotspot of health informatization technique which already entered into the new times of mHealth With the advantages of convenient, efficient and low cost, the mHealth is one of the technical measures to narrow the digital divide, improve the fairness in health services and realize the medical model of prevention first This paper begins with a brief introduction of the definition and characteristics of the mHealth and then studies the structure of the mHealth, including mobile health terminals, mobile health access and mHealth services Finally, a summary and outlook of mHealth, with which health services will be "everywhere available", are presented