The invention discloses a non-woven fabric carding machine. The non-woven fabric carding machine comprises a rack, a cotton carding roller rotationally connected onto the rack, a plurality of work rolls, a residue removing device, support rods and a fixed plate arranged on the rack, wherein the fixed plate is coaxial with the cotton carding roller, an arc-shaped hole coaxial with the fixed plate is formed in the fixed plate, the support rods adopt telescopic structures, one end of each support rod is hinged to the circle center of the corresponding work roll, and the other end of the support rod is connected into the arc hole; and the residue removing device comprises a negative pressure machine, an air suction pipeline facing the cotton carding roller and a sieve located in the position, close to the opening of the cotton carding roller, of the air suction pipeline, and an air suction port of the negative pressure machine is connected with a pipeline. The work rolls can be adjusted in the radial direction of the cotton carding roller, and angles among the work rolls can be adjusted through the arc hole, so that the carding area of the non-woven fabric carding machine is adjusted. The residue removing device is arranged and can suck out short fiber and impurities in the carding process.