The prediction of religious fluctuations has many conflicting opinions, but there is an undeniable fact that world religions are still moving non-stop, colorful with different growth rates. in different areas. In the 21st century, such great religions like Christianity, Islam, Buddhism ... tend to change significantly in size and area of influence. The article sketches the world religious picture in the 21st century, thereby pointing out the emerging development trends of world religious life before the changes and impacts of economic and social life.