Abstract: Objective To get the influence of personality disorders on anxiety disorders.Methods One hundred and twenty seven out-patients with anxiety disorders were diagnosed with the structured clinical interview for diagnostic and statistical manual of mental disorders.4th ed(text revision)AxisⅠ(SCID-Ⅰ)and their personality disorders were assessed with the structured clinical interview for diagnostic and statistical manual of mental disorders.4th ed SCID-Ⅱ AxisⅡ(SCID-Ⅱ).Moreover,all patients were assessed with the self-rating anxiety scale(SAS),self-rating depression scale(SDS),and followed for half year.Results Compared to anxiety disorders only,anxiety disorders with personality disorders had more severe symptoms,severe impaired social function,higher state of anxiety,worse prognosis,lower satisfaction for treatments,lower support from the society,easier to have been prescribed more than one anti-anxiety medication,anti-depression medication or anti-psychiatric medications,and easier to visit more doctors.Conclusion The high co-morbid rate of anxiety disorders with personality disorders influence the anxiety disorders greatly,personality disorders should be given more attention and assessed sufficiently when doctors are confronted with anxiety disorders patients.

Key words: anxiety disorder, personality disorder, co-morbidity