In the process of teacher teaching and student learning in Taiwan, the influence of the textbooks is considerably important. Besides, textbooks are also considered a critical medium of gender ideology. Therefore reducing gender bias is a comprehensive and vital issue for improving textbooks. However, few researches focus on senior high textbooks related to gender bias in nearly twenty years. Thus, the purpose of this study is to explore the gender bias of senior high Chinese literature textbooks. Content Analysis is mainly employed in the study. In brief, the main findings of the study are as follows: (1) The gender stereotype of men and women's activities remains a serious problem in textbooks. (2) The gender stereotype of men and women's occupations remains a serious problem in textbooks. (3) The gender stereotype of men and women's interactions or relationships remains a serious problem in textbooks. (4) The gender bias of women's subordination to men remains a serious problem in textbooks. (5) The gender bias of women being depreciated or punished remains a serious problem in textbooks. (6) The gender bias of women's contribution being hidden remains a serious problem in textbooks. (7) The gender bias of women being joked and mocked is a rare and slight problem in textbooks. (8) The gender bias in the modern Chinese literature texts is a more serious problem than in the ancient Chinese literature texts.