In recent five years, debt crisis has been a focus issue which the default of US debt has led to an overwhelming situation for many countries especially for developing countries. Additionally, subsequent effects of Covid-19 are still insisted that global economic still at a trough since the virus started to spread. There are many factors contributed to the trend of change in debt by country. Base on the dataset produced by world bank named international debt statistics last 5 years, using the method of quantitative analysis on analyzing China, India and Ukraine to find the factors that influence debt change in different countries. According to this study, it has found out that US debt crisis and the depreciation of US$ could be the main reason why the debt scale were decreased in final two years. However, Covid-19 is the cause which debt continue to increase. Government structure is also a factor affect the change in debt.