Based on the original data from Web of ScienceTM database, we describe the knowledge mapping of international positive psychology by using a knowledge mapping analyzing tool CitespaceIII, and dig out the high-impact journals, authors and hot issues in different periods in positive psychology areas. The scientific knowledge mapping shows that the positive psychology highlights the roles of theoretical research and empirical intervention study. Furthermore, it is also involved in many other fields, such as the human resources development and management, education and teaching, trauma therapy, group counseling, which are related to subjective happiness, physical and mental health, psychological toughness, meaning of life, optimism and other perspectives.