Based on the social background of increasingly serious aging of the population and the growth of chronic diseases, the paper introduces the mode of Connected Health (cHealth), analyzes the differences between cHealth and Mobile Health (mHealth) as well as the advantages of cHealth, introduces the application of cHealth in contemporary society, and discusses the challenges of cHealth, including the optimization of sensing strategy, creation of data integration, analysis on the new mode, optimization of feedback strategy and development of new health insurance modes.