The investigation objective was to substantiate an optimal tactics of treatment in coexistence of hepatic echinococcosis with other surgical diseases. The results of examination and treatment of 47 patients were analyzed. Chronic calculous cholecystitis was diagnosed in 21 of them, anterior abdominal wall hernia--in 14 (umbilical one--in 8, abdominal linea alba--in 4, postoperative--in 2), gynecological diseases --in 8 (ovarial cyst--in 5, pyosalpynx--in 3), chronic appendicitis --in 4. In 39 patients the coexistent other organs echinococcal affections were revealed (in 16--the abdominal cavity cysts, in 12--in spleen, in 8--in ovarii, in 3--in the midst of the anterior abdominal wall soft tissues). In coexistence of hepatic echinococcosis with surgical diseases of the abdominal cavity organs it is necessary to try to perform a simultant operation. The only argument for surgeon to reject the simultant operation performance may be a high operative risk present and the patient severe state. Performance of simultant operations must begin on the least damaged organ. The above mentioned rule is not true only for hepatic echinococcosis with complicated clinical course (obturation jaundice, the cyst perforation into the abdominal cavity).