Girdle (1) for the treatment of diastasis of rectus abdominis (ard), of which they comprise a main body (2) rectangular able to fit the lower back of the patient, with a first (5) and a second side (6) transverse between upper (3) and lower (4) ends, both front (7) and rear (8) faces, the front face (7) being suitable for contact with the patient, and opening means and closure (9) such that the belt (1) has a first open position and a second closed position, characterized in that the main body (2) comprises - reinforcement means located on the rear face (8), and; - a first (11), a second (12) and a third longitudinal elastic ribbons (13), with a first end (11.1, 12.1, 13.1) for fastening to the main body and a second end (11.2, 12.2, 13.2) in that the opening and closing means (9) are located, the length of the ribbons being greater than that of the main body (2) and the sum of the length of the main body (2) being that of any of the belts being smaller that the perimeter of the torso of the patient in the area of the rectus abdominis; - where the first end (11.1, 12.1) of the first and second tapes (11, 12) are fastened at the upper and lower end respectively of the first side (5) of the main body (2) and the first end (13.1) of the third tape (13) is attached to the lower end of the second side (6); - where the second ends (11.2, 12.2, 13.2) of said tapes, in the first open position are free ends and in the second closed position are attached to the rear face (8) of the main body, where the first tape (11) it is arranged horizontally, the third (13) in ascending curved shape and the second (12) with curved u-shape, such that the second end (11.2, 12.2) of the first and second ribbons (11, 12) are located at the upper and lower end of the second side (6) of the main body respectively and the second end (13.2) of the third belt (13) in the central zone of the first side (5) thereof. (Machine-translation by Google Translate, not legally binding)1. Faja (1) para el tr