The rapid development of China’s economy and society needs innovative and inter-disciplinary English talents. However, traditional skill-oriented foreign language teaching leads to the absence of English major students’ critical thinking. Content and Language Integrated Learningcan solve this problem well. This article integrates Content and Language Integrated Learning with principles of language and critical thinking integrated teaching to explore how to make effective instructional designs in English major writhing class to develop students’ critical thinking, with the expectation of providing instructional ideas for college English teachers.