This paper analyzes the panel data of 60 countries during the period 1990-2014. It employs non-radial and non-angled slack-based measure (SBM) method to count the economic growth efficiency and inefficiency sources under government debt constraints. The results show that traditional efficiency is usually higher than economic growth efficiency, and the latter can better reflect real economic situation. In addition, debt inefficiency is the main cause of declining economic growth efficiency in all countries, and it has the greatest impact on developing countries. Meanwhile, this paper also adopts the global reference Global-Malmquist-Luenberger (GML) index to measure total factor productivity (TFP) and further decomposes it into technological changes and efficiency changes. It is found that technological progress and efficiency improvement are the main driving forces for enhancing total factor productivity.the Keynesian thoughts have more and more important impact on governments and the scale of fiscal deficits has rapidly expanded. However, the expansion of government debt has not permanently brought about sustained economic growth. The financial crisis resulted in the bankruptcy of the three largest banks in Iceland in the same year and the total debt amount was 9 times GDP. Then it refused to repay the debts at the expense of national credit and became the first country to collapse due to debt after the financial crisis. In 2009, three major rating agencies downgraded Greece's credit rating which accelerated the process of the Greek debt crisis. This incident became the trigger for the sovereign debt crisis in the euro zone countries and the leading euro country's giant, Germany, was suffered a heavy setback. With the continuous spread of the government debt crisis, the United States, as the only super economy in the world, also contained great credit risks. The unremitting outbreak of debt crisis had aroused strong doubts about the view that government debt promotes sustainable economic development.The lessons of history and the results of a large number of academic studies tell us that the expansion of government debt can, to a certain extent, facilitate the rapid development of economy, while the continuous accumulation of government debt will crowd out private investment. What's more, the debt crisis will lead to economic and social unrest and the country will enter a stage of poor development with low growth and low productivity. Therefore, whether it is possible to continuously raise the scale of government debt without considering government debt constraints in order to seek economic development in the process of production, and the heterogeneity of economic growth will be after taking account into government debt constraints. These issues have been discussed by scholars and will be researched across the board in the paper.At present, most scholars tend to take energy and resources as constraints in the production process and seldom take into account the constraints of government debt. However, government...