For many years, the "formula", "function" and "straight line" of junior high school mathematics have been the key contents of the senior high school entrance examination. "Equation Thought" and "Function Thought" run through the examination paper. In addition, "open questions", "exploration questions", "reading comprehension questions", "scheme design" and "hands-on operation" are also hot topics in the senior high school entrance examination in recent years. Most of these questions come from textbooks, and some have different knowledge requirements, but the questions are novel, the background is complex, and the text is long, which is difficult to sort out. Therefore, we should pay attention to the study and training in this field in order to be familiar with and adapt to these problems.