An analysis of data of 228 patients with different pathomorphological forms of acute purulent lactation mastitis has shown that clinical manifestations of purulent mastitis are due to the pathomorphological form of the inflammation. Complex treatment of acute purulent lactation mastitis including the timely radical operations followed by antibacterial and detoxicating therapy and immunotherapy ensures recovery of the patients and maximal preservation of milk producing tissues. Selection of the magnitude of operation for purulent mastitis is made with regard for their form.