Objective: To explore the differences in emotional susceptibility, emotional needs for emotional regulation, and the choice and use of regulatory strategies among college students with different levels of social anxiety, and to provide useful reference for intervention of anxiety symptoms dominated by emotional disorders. Methods: Using the experimental method, 256 college students were recruited, and the high social anxiety group and the low social anxiety group were selected to carry out the emotional regulation flexibility experiment. Results: The high social anxiety group had higher susceptibility to negative emotions, higher emotional intensity and lower degree of control, and less flexibility and repertoire in different situations. Positive emotion susceptibility significantly predicted the number of repertoire and total strategies; Emotional intensity and degree of control significantly predicted regulatory flexibility. Conclusion: People with high social anxiety have lower flexibility in emotional regulation, which is mainly reflected in less choosing different strategies in controllable situations, using disengagement strategies independently of the situation, and making less effort to retrieve and use regulatory strategies in different situations.