The "King of Mathematics" invitational tournament was held by the Trial Teaching Theory Research Association of the Center for Mathematics Education Research and Development of China Education Association. The topics were divided into six groups, from 1 to grade 6.

The contest topics are in line with students' learning level of mathematics, close to students' life, emphasizing interest and thinking, and the topics are illustrated. According to the grade proposition, it is divided into preliminary contest and final contest, and the test paper is organized and printed by the organizing Committee of the national "King of Mathematics" invitational tournament. The test paper proposition is close to the requirements of each grade in the mathematics curriculum standard, and the difficulty is appropriately increased to make it scientific and interesting. In the preliminary contest, the content that should be mastered in the mathematics textbook should be examined, and both knowledge and ability should be paid equal attention, with a full score of 120. In the final, 30% of the applicants with excellent results in the preliminary round will enter the final, and their knowledge and ability requirements are slightly higher than those in the preliminary round, with a full score of 120.

As the "king of mathematics", he paid special attention to the examination of "number", especially after entering the senior grade, the proportion of number theory gradually increased, and the first two topics in each grade were quick calculation and clever calculation.