This book is a psychology textbook. On the basis of retaining the content system and compilation style of the original textbook, this book further draws on the characteristics and advantages of excellent personality textbooks at home and abroad. It is divided into three parts: an overview of personality psychology, progress in personality theory, and applied research on personality. The book strives to achieve an organic combination of personality theory and empirical research, and strives to reflect the domestic and foreign research results and development trends of this subject in the past ten years. It not only pays attention to the systematic and scientific nature of personality theory, but also pays more attention to the practical application of the personality field, especially the extensive integration of the personality field with reality.