Based on the introduction of the method of constructive learning artificial neural networks(ANN) and the theory of rough sets,the model of the macroeconomic early-warning system is built which is based on the rough set and the constructive learning ANN based on the covering algorithm.

Analysis of data about economic eariy-warning based on rough sets theory is processed and the mining of the hidden knowledge,the acquisition of the decision rules,the reduction of the decision rules is processed and the minimal decision rules are deduced,A new way for the knowledge acquisition of economic early-warning is supplied.

If the fluctuation goes beyond a certain range, it will damage the development of economy;therefore, the research of economic early-warning is needed.

Design and implementation of industry economy early warning system on data warehouse;

On the basis of theoretical analysis and real practice,a quantitative method for economy early warning indicator screening-Applied contribution analysis,is put forward.

Research on economic early warning based on maximum entropy;

As Economic early warning is the cognition and judgment of economic status, its results affect the choice of macroeconomic policies, it has been one of the most important research fields of economics, and widely concerned about by all governments and public.

Research on economic warning mechanism of gold enterprises;

All the developed countries have experienced the rapid increase of medical care expenditure, which has brought heavy burden to the national revenue and provides challenge and turning point to the development of health economics.

The aim of the paper is to introduce the development of the Health Economics and review and remark the innovation of the medical insurance of our country briefly.