With the advent of the post epidemic era, discourse analysis based on systemic functional linguistics has undergone corresponding changes. As one of the key categories of science discourse, the discourse of science education has become one of the research hot spots. The reasonable arrangement, presentation and proportion of Chinese science education in English textbooks of senior high school are of positive significance to improve students' scientific literacy and broaden their horizons. This study aims to analyze the discourse of science education, including the contents, integration forms, meaning construction, relation between image and text by using qualitative methods and investigate the attitude of teachers towards science education in Chinese English textbooks of senior high school by using quantitative methods from the perspective of multimodality based on textbook evaluation theory, visual grammar, and relation theory of image and text. A total of 228 teachers from five different Chinese cities as Anyang, Luoyang, Luohe, Xuchang were investigated. The conclusion are: (1) it should pay attention to increase cognition education of science and technology frontier, design the content of science education more scientifically; (2) it should pay attention to use multimodality to strengthen science education rather than single modal; (3) it should adopt the presentation forms of multimodality which teachers and students prefer and easy to accept in order to improve the teaching effect and guidance of science education in senior high school.