Abstract:Based on the study of world sustainable development according to systematic theory, a balance sheet which measures different countries'levels of sustainability (called the sustainability Assets-Liabilities table) was developed. The research includes sustainable development support systems, the assets-liabilities matrix, the assets-liabilities algorithm, and the assets-liabilities types. Then, the sustainability Assets-Liabilities method is applied to quantitatively calculate the sustainable development capability of 192 countries, particularly, Assets-Liabilities levels of three different types of countries, namely developed countries, emerging economies countries, and the most undeveloped countries, are compared at different support systems. Their strengths and weaknesses are plotted on a radar map. The preparation of balance sheet provides a solid theoretical foundation for accurate judgment on the development capacity of a particular country or region. This Assets-Liabilities analysis provides quantitative metrics for measuring the actual progress of each country's sustainable development strategy, and also offers the references for each country to further design and plan the priority order of sustainable development goals.