光动力治疗(photodynamic therapy,PDT)是近二十年来新兴的肿瘤治疗方法,与肿瘤传统手术、化疗和放疗方法相比,能选择性地消灭局部的原发和复发肿瘤,而不伤及正常组织。大多数肿瘤出现临床症状时,已是肿瘤晚期,丧失了肿瘤治疗的最佳时机。光动力治疗作为新兴的肿瘤治疗技术,能够以较小创伤为代价改善患者的生活质量,并提高患者生存时间,有望成为恶性肿瘤姑息性治疗的首选。 Photodynamic therapy (PDT) is a new approach to cancer treatment in recent two decades. It selectively eradicates localized primary and recurrent tumors compared with conventional surgery, chemotherapy and radiotherapy methods without damaging the normal organization. When most of the tumors have clinical symptoms, they are the advanced stage of the tumor and lose the optimal timing of tumor treatment. As a new cancer therapy, photodynamic therapy can improve patients’ quality of life with less trauma and improve patient survival, which is expected to be the first choice for palliative treatment of malignant tumors.