In four years, 36 people entered the national training team, accounting for 15% of the total number of 240 people, especially 202 13, which exceeded 20% of the total number of 60 people. This is mainly due to the competition of Niu Qiang and Shanghai middle schools. Nine people were selected this year, surpassing other provinces. The performance of Hubei Province is quite stable. In the past four years, 6 people, 9 people, 6 people and 7 people were selected for the training team, and the number reached 28, reaching more than 6 people every year, ranking second in the country. Zhejiang ranked third with 26 people, and its performance was quite eye-catching. The provinces with more than 20 people are Guangdong and Beijing, among which Guangdong has 24 people, accounting for 10%, and Zhejiang has 23 people. Judging from the top five provinces, Shanghai and Beijing, where the number of college entrance examination students is about 50,000 each year, are stronger, and Guangdong, including four first-tier cities such as Beishangguangshen and Shenzhen, shows that the Olympic Mathematical Competition also needs the support of economic strength.