... 31 Dunn et al (2005) studied the relationship among positive emotion, gratitude and trust. 32 Qiu et al (2008) 33 revised the PANAS(Positive Emotion and Negative Emotion Scale) compiled 34 , based on the theory of two-dimensional structure of emotion, using the method of expert evaluation and questionnaire survey, during the research, 218 valid questionnaires were collected, and the items were analyzed and screened by exploratory factors, and 33 words describing positive and negative emotions were obtained at the same time, descriptors (17) describing positive emotional experience include active, alert, dedicated, firm, enthusiastic, excited, encouraged, interested, proud, powerful, cheerful, energetic, delighted, surprised, cheerful, happy and grateful, descriptors (16) describing negative emotional experience include fear, panic, tension, jittery, irritability, hostility, guilt, shame, sadness, distress, fear, contempt, anger, frustration, anger and anxiety. Generally, after experiencing positive emotions, individuals are more likely to trust others. ...