A total of 155 women with acute lactation mastitis were followed up. The patients were divided into 3 groups: Group 1 included 53 patients in whom purulent wounds were treated with CO2 laser followed by primary and primary-delayed sutures; Group 2-52 patients were treated with primary-delayed sutures without laser therapy; Group 3-50 women were treated by the traditional open method. In 50 (94.3%) Group 1 patients the wounds healed by primary tension with the mean bed-day being 9.6. In Group 2 primary healing was achieved in 46 (88.4%) patients, with the mean bed-day being 11.8. In Group 3 patients the mean bed-day made up 8.2. The wounds healed by secondary tension on days 28-34 after surgery followed by outpatient treatment.