The internet based medical is a new set of information technology that integrates internet information technology with traditional medical industry. Health and medical data is a collection of data related to population health, medical services and public health.These two are closely linked and complement each other.In the Internet based medical era,precisely medical care model,personal health management and scientific administration of health and health care are facing new development opportunities. At the same time, it also brings challenges for governance model transformation and health care data micro-path development.We need to correctly understand the opportunities and challenges to push forward the 13th five-year plan medical and medicine system reform and promote healthy China construction.