In this study, global COVID-19 case datasets were downloaded from the Center for Systems Science and Engineering at Johns Hopkins University. Data of more than 3,750,000 confirmed COVID-19 cases from 185 countries/regions from January 21, 2020 to May 6, 2020 were included in this paper. The daily numbers of COVID-19 cases are being reported for each province or state in several large countries such as China and the United States. Zonal mean COVID-19 cases on each day were calculated and fitted using normal distribution. The center and the standard deviation of the fitted curve were used to show the most serious dispersal regions.