The invention relates to a device for monitoring the breathing of a user comprising:a textile support comprising a tubular portion formed by knitting an electrically insulating majority ground yarn, the tubular portion being able to cover the chest of the user,at least one breathing sensor formed by knitting a detection yarn, the detection yarn comprising an internal core made of an electrically insulating material and an external sheath surrounding the internal core, the external sheath being formed made of an electrically conductive material,wherein the breathing sensor forms a conductive band having a first end and a second end positioned at a distance from each other, the ends being able to be connected to an apparatus for measuring the electric resistance of the conductive band.
