1. Online registration: Online registration may be provided in some areas. You can find relevant information on the websites of official website or relevant institutions.

2. Paper registration: In some areas, participants may be required to fill in the registration form and mail it or submit it to the designated place.

3. School registration: Some schools will organize trials or recommend outstanding students to participate in the competition. For relevant information, you can contact your school's math teacher or teaching and research group.

4. Participation in training courses: These institutions are usually responsible for selecting outstanding mathematics students to participate in the international Olympic Mathematics Competition and providing guidance and training for students.

Need to prepare:

Generally speaking, I need to submit my academic report card, recommendation letter, identity certificate and other documents to prove whether I meet the conditions for participating in the Olympic Mathematics Competition. When registering, you need to fill in the registration form as required and pay the corresponding registration fee before you can participate in the Olympic Mathematics Competition.

The preliminary competition for the Olympic Games is organized by all schools, with provinces, municipalities and autonomous regions as units to register in provincial-level competition areas. According to the regulations of the Olympic Organizing Committee, parents and students are not allowed to register individually. Candidates who pass the preliminary round will enter the semi-finals and the national finals.

Extended data:

Mathematical competition is one of the effective means to discover mathematical talents. Mathematics competition in the modern sense began in Hungary. Most of the winners of some major mathematics competitions have made great achievements in their later careers.

Therefore, all developed countries in the world attach great importance to mathematics competitions. In the past ten years, mathematics competitions in middle schools in China have developed vigorously, with increasing influence. In particular, middle school students in China have been among the best in the most influential and highest-level international mathematical olympiad for many times, and their achievements have attracted worldwide attention, fully demonstrating the intelligence and mathematical ability of the Chinese nation.

It is necessary and beneficial to show one's intelligence and know about the competition situation in China through mathematics competition.