1, which is dominated by competitions in five disciplines, namely, mathematics, physics, chemistry, biology and informatics. Self-enrollment colleges have high recognition of the competitions in five disciplines. There are three main categories of self-enrollment competitions: science competitions (Olympic Games in five disciplines), liberal arts competitions and science and technology competitions.

(1) In terms of competition difficulty, generally speaking, mathematics ≥ physics > chemistry ≥ informatics > biology.

(2) From the perspective of college recognition, that is, the recognition of the event by self-enrolled colleges, mathematics ≥ physics > chemistry ≥ informatics > biology.

(3) From the degree of major selection, that is, in the process of self-enrollment, candidates can choose their major freely after being selected through a certain subject competition, and the order is Mathematics > Physics > Chemistry > Informatics ≥ Biology.

2. Mathematics competition content: the preliminary contest shall not exceed the current high school mathematics teaching syllabus; The content of the rematch is subject to the competition outline; The final will be held in accordance with the requirements of the International Mathematical Olympiad.

3. Physics competition content: the competition content includes some contents of high school physics and college physics, according to the proposition of the competition outline.

4. Chemistry competition content: including the basic contents of high school mathematics, physics, biology, geography and environmental science. See the competition outline for details. The finals are supplemented and improved on the basis of the basic requirements of the preliminary competition.

5. Content of biological competition: Based on the current middle school syllabus, it has been improved and expanded. Including high school biology and college biology. The content of the competition is mainly based on the competition outline.

6. Contents of Informatics Olympic Competition: The range of questions, the competition form and the scoring standard are determined by the league outline formulated by the Scientific Committee. The preliminary contest takes general and practical computer knowledge as the test content, focusing on basic and practical knowledge, with written test as the main content.