Objective To describe the criteria and procedure for defining an essential healthcare package in the developed and developing countries. Method Search words were chosen by both health policy experts and search coordinators after discussion and pilot. We searched electronic databases, websites of health institutions and governments and search engine Google. Any reports of implemented strategy to develope an essential healthcare package were included. Pre-designed data extraction form was used for collecting strategies and study method of included studies. Then the extracted information was analyzed and described. Result One hundred and sixty-six studies covering 72 countries were included, most of which were studies in the middle and low Countries. In terms of study objective,160 articles aimed to describe strategies, 6 articles aimed to evaluate effectiveness of strategies.Five studies evaluating effectiveness were cross-sectionnary data, and one study was time series. Conclusion An appropriate package should be defined according to both technique criteria and social welfare criteria, considering each country’s healthcare system and market structure, characteristics of the demander and provider, capacity of government’s regulation. The experience in transition countries gives us more high lights.