In terms of business field, data source, collection and storage mode as well as degree of openness, public health information can be classified according to multi-dimensional standards. Starting from key links in public health information management, the paper classifies information management into data merger and open utilization of data. Thus, it classifies public health information management modes into four categories, each of which has striking characteristics. The management of public health information in China should be based on the complete and systematic analysis of the utilization demands so as to realize classified management of information and give consideration to information security while enabling information opening.