1. Textbook content: Chongqing's junior high school mathematics pays attention to the combination of theory and practice, emphasizing students' in-depth understanding and application of mathematical concepts, while Chengdu's mathematics pays attention to the solidity of basic knowledge and the cultivation of calculation skills.

2. Teaching methods: Junior high school mathematics in Chongqing is more inclined to question-oriented inquiry teaching, encouraging students to actively think and practice, while mathematics in Chengdu pays more attention to traditional lecture teaching, teachers' explanation and students' memory.