PURPOSE: To shorten a non-woven cloth forming step and to improve a feeling by forming a knuckle of warps, having a difference of a level, on a conveying surface by means of the warps and wefts having sizes different from each other, in a belt for forming a non-woven cloth wherein a fabric formed of the warps and a plurality of wefts having thread sizes different from each other is placed on a conveying surface.

CONSTITUTION: A fabric is formed of warps 5 and 6, large wefts 7, and small wefts 8, e.g. polyethylene terephthalate monofilament, to form the conveying surface of a belt. In this case, the size of the weft 7 is set to a value 1.2-20 times as large as that of the weft 8. An uneven surface having a difference R of a level is formed on the conveying surface by means of a top part A of a knuckle of the warp formed of the warps 5 and 6 and the weft 7 and a top part B of 8 knuckle formed of the small weft 8 and the warps 5 and 6.