Simply put, cognitive therapy is a general term for a class of psychotherapies that modify patients’ maladaptive cognitions through cognitive and behavioral techniques based on the theoretical assumption that cognitive processes influence emotions and behaviors. By maladaptive cognitions, we mean distorted, irrational, and negative beliefs or thoughts that often lead to emotional disturbances or maladaptive behavioral manifestations in patients. The basic view of therapy is that cognitive processes mediate behavior and emotion, and that maladaptive behavior or emotion is related to inappropriate cognitive styles. The therapist’s job is to work with the patient to identify these maladaptive cognitions and provide “learning” or training opportunities to correct them or to replace them with “new” cognitions that bring the patient’s cognitions closer to reality or realities. With the change of maladaptive or erroneous perceptions, the patient’s emotional or behavioral performance is changed and social adjustment is enhanced. The main technical feature of the therapy is Socratic logic questioning, in which the therapist asks a series of questions to make the patient gradually recognize his or her cognitive errors, shake his or her inappropriate ideas, and accept possible solutions or correct his or her misconceptions. It is different from traditional behavioral therapy because cognitive therapy not only focuses on the treatment of maladaptive or problematic behaviors, but also on changing the patient’s cognitive style and the harmony and coordination between cognition, behavior and emotion. Similarly, cognitive therapy differs from psychoanalysis in that it places emphasis on the impact of the patient’s cognition in the present (here and now) on his or her mind and body, rather than on the impact of the patient’s past (especially childhood) traumatic experiences on current problems. Cognitive therapy is widely used in psychotherapeutic work and plays an important role in adjusting patients’ emotions and changing their behaviors, and is very popular among therapists and patients.