Kit for protecting and holding catheters, characterized in that it comprises, on the one hand, a device (1) having a bearing (3) with an inner face and an outer face, said inner face being intended to be applied to the skin of a patient and having a cavity (3c) shaped to accommodate the non-invasive part (head or connector) of a catheter, while said outer face is attached to the central part of a thin and flexible cover sheet (2) which comprises an unglued protruding peripheral fixing portion extending outwards from said central part, and of which the inner face is intended to be applied to the skin of the patient, and, on the other hand, a package (4) that contains a non-allergenic and water-impermeable adhesive gel, this package having an outlet orifice shaped to allow a string of adhesive gel to be applied to the skin around the placement of the non-invasive part (head or connector) of the catheter, after the latter has been inserted.