The invention relates to a connecting device for connecting a lining member (20) with a supporting member (30). The connecting device is provided with a connecting clip (10) with two spring legs (11). The spring legs (11) are provided with fixing projected noses (12) on ends of the supporting legs. Hereon, the invention stipulates a fact that the connecting clip (10) is inserted into an accommodating gap (21) of the lining member (20) so that the fixing projected noses (12) project out of the end of the accommodating gap (21) in an insertion direction (E) so that the fixing projected noses (12) fix the lining member (20) from the back part.