One of the core functions of the college entrance examination is to guide the teaching. The new college entrance examination reform puts forward new requirements for high school teaching and the teaching model and subject content are supposed to be changed accordingly. More importantly，the educational concept and value orientation must keep up with the requirements of the reform. From the quality nurture system to the evaluation system，from curriculum construction to discipline quality，from comprehensive quality evaluation to diversified admissions，as well as the establishment of critical innovation thinking，it has profoundly affected the ecology of future high school teaching. In addition，a new era of high school teaching put forward new requirements，such as AI teaching，big data and cloud computing analysis，critical thinking teaching and art teaching in the innovative mode，and so on.