目的　了解 PLC患者的不成熟防御机制的状况。方法　采用防御方式问卷和流调用抑郁自评量表对 PLC患者进行测试 ,并与 1 0 0例健康人群作对照。结果　 PLC患者比健康人群采用较多分裂和潜意显现机制 ,采用较少抱怨机制 ,其抑郁症状的发生率亦高于健康人群。结论　PLC患者的心理防御方式存在缺陷 Objective To understand the status of immature defense mechanisms in PLC patients. Methods The patients with PLC were tested by defensive questionnaire and Self-rating Depression Scale, and compared with 100 healthy people. Results Compared with healthy controls, PLC patients adopted more mechanisms of division and subjective display, and less complaining mechanisms were used. The incidence of depressive symptoms was also higher in PLC patients than in healthy people. Conclusions There are deficiencies in the mental defense of PLC patients