There are many international competitions in the field of mathematics, the most famous of which is the International Mathematical Olympiad (IMO). IMO is the largest and most influential international mathematics competition for middle school students in the world. The contestants are strictly selected from more than 0/00 countries around the world, and the gold content is very high. The competition is divided into two days, lasting 4.5 hours every day, and three questions are taken.

In addition, there are some other international competitions, such as American Mathematical Thinking Challenge (AMC) and British Mathematical Olympics (BMO).