Objective:To probe into the influence of different emotion regulation on BPD patients,in addition,to find out the effective emotion regulation which can relieve symptom of BPD patients.Methods:20 BPD patients participated the experiment,their emotional experience and physiological arousal were examined.Results:As watching negative film 3,cognitive reappraisal group reported less fearful and tensional experiences,and lower heart rate.After watching negative film 3,cognitive reappraisal group showed quicker recovery.Conclusion:Cognitive reappraisal regulation can reduce the negative emotion of patients with BPD.