A structured barrier-exhaust-type mask with a support relates to personal protective equipment, and specifically to masks intended primarily for use in the field of medicine. The present mask can serve as all-round environmental and hygiene protection for doctor and patient during the delivery of medical care of any degree of complexity, including long surgical procedures, and also as personal protection for civilians against airborne infection. The mask completely prevents exhaled air from passing between doctor and patient, and exhausts exhaled air in a given direction. The mask comprises a hollow structure which forms a mask cavity in the facial region and is designed in the form of a channel having an inlet and an outlet for the passage of an air flow, said mask being characterized in that the inner and outer walls of the structure are made of an air-impermeable material, and a support is provided between the surface of the face and the inner wall of the structure, said support being in the form of an ergonomic cushion around the mouth region, or an arc running along the lower or upper jaw.