The ultraviolet laser spectrofluorimetry method for the diagnosis of urgent surgical disrases of abdominal cavity organs and the determination of their vitality is determined. The experimental studies showed the possibility of the use of Nd: YAG-Iaser for sutureless connection of uterus wound edges and geometric recovery of serous integument on the basis of tissue welding. The use of the laser welding suture in the clinic made it possible to decrease by a factor of three the frequency of occurence of pyo-inflammatory complications after caesarean section and uterus supravaginal amputation