Abstract: To test the prediction of gratitude on people’s helping behaviors, and made a more particularly research on the relationship between gratitude, indebtedness and happiness. 296 undergraduates were selected to fill in situational experiment, and the methods of descriptive statistics, covariance analysis was adopted. Results indicate: The gratitude is different from indebtedness and happiness. It is a positive emotional characteristics with value of social morality, rather than indebtedness and happiness, gratitude can predict prosocial behavior such as helping behavior positively.

Key words: undergraduates, gratitude, helping behavior, scenarios experiment