With the development of economic globalization and the expansion of global communication and cooperation, English, as an international language, is playing an increasingly important role in political, economic and social lives. Being aware of the demands, Chinese college students are striving to master this language as power and an opportunity for future development. One way to learn English effectively is through autonomous learning. This book presents in detail an in-depth investigation into non-English major students' knowing and understanding about learner autonomy and the status quo of their autonomous learning as well as the factors that facilitate or hinder the development of their autonomous learning abilities.