A cleaner suction nozzle (10, 100) and a dust suction device. The cleaner suction nozzle (10, 100) comprises a body (11), provided with an air vent portion, an air door (70, 152) and a front end portion a carding member (13, 101), the carding member (13, 101) comprising a rotating body (167) and at least one carding tooth portion, the carding tooth portion being provided with a base (28, 112) and a plurality of carding teeth (29, 113a, 113b), and the plurality of carding teeth (29, 113a, 113b) being fastened to the base (28, 112) and arranged in a direction identical to the length direction of the air door (70, 152) and a rotating member (12). The extension direction of the carding teeth (29, 113a, 113b) is perpendicular to the axial direction of the rotating body, and the length direction of the air door (70, 152) is parallel to the axial direction of the rotating body (167), the length of the air door (70, 152) is not smaller than that of the distribution range of the carding teeth (29, 113a, 113b) on the base (28, 112), the air vent portion is provided with a connector member and an air inlet vent (72, 160), the air inlet vent (72, 160) is provided with a front guide area (73, 160a) and a back guide area (74, 160b), the length of the front guide area (73, 160a) is not smaller than that of the air door (70, 152), and the front guide area (73, 160a) is provided with a certain depth in the direction of the air door (70, 152) facing the connector member.Linvention concerne une buse daspiration daspirateur (10, 100) et un dispositif daspiration de poussière. La buse daspiration daspirateur (10, 100) comprend un corps (11) comprenant une partie évent dair, une porte dair (70, 152) et une partie extrémité avant un élément de cardage (13, 101), lélément de cardage (13, 101) comprenant un corps rotatif (167) et au moins une partie dent de cardage, la partie dent de cardage comprenant une base (28, 112) et une pluralité de dents de cardage (29, 113a, 113b), et la pluralit
