Conclusion breath-butagas testing can give safe,simple and stable biological index and basis for diagnosis of mental disease in forensic medicine.

• 结论该方法为精神病患者的诊断和司法精神病的鉴定及刑事责任能力的鉴别认定提供了一种安全、简便、不易被人为因素干扰的生化指标和依据。