The present invention relates to a photodynamic system for tumor treatment, characterized by mainly comprising a system controller, a laser guide device, a laser power detection device, a blood flow and blood oxygen monitoring device, and a photodynamic mechanism for tumor treatment. The system controller comprises an industrial personal computer and a single board computer, connected to each other, and the single board computer is connected respectively to the photodynamic mechanism, the laser power detection device, and the blood flow and blood oxygen monitoring device. Beneficial effect: a photodynamic system for tumor treatment is formed by a dedicated light guide device and detection device combined with the photodynamic mechanism. According to a principle of the photodynamic system of integration of detection, monitoring, and therapy, a doctor can precisely know the oxygen content in a focus (tumor), the photo-sensitizer concentration, and the dosage of laser, eliminating the blindness of the doctor in the treatment of the tumor, and effectively improving the therapeutic effect of the photodynamic therapy for tumor treatment.Linvention concerne un système photodynamique pour le traitement de tumeurs, qui est caractérisé en ce quil comprend principalement un organe de commande de système, un dispositif de guidage laser, un dispositif de détection de puissance laser, un dispositif de surveillance du débit sanguin et de loxygène sanguin et un dispositif photodynamique pour le traitement de tumeurs. Lorgane de commande de système comprend un ordinateur personnel industriel et un ordinateur monocarte qui sont connectés entre eux, lordinateur monocarte étant connecté respectivement au dispositif photodynamique, au dispositif de détection de puissance laser et au dispositif de surveillance du débit sanguin et de loxygène sanguin. Linvention présente lavantage de constituer un système photodynamique pour le traitement de tumeurs, formé par la combinaison dun dispositi
