A drafting device with a drafting roller (14a, 14b, 15a, 15b, 17a, 17b) and a cleaning device for the drafting roller (14a, 14b, 15a, 15b, 17a, 17b) comprising: a scraper (150, 150A, 150B) extending along an axial width direction of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b) and configured to come into contact with an outer circumferential surface of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b), wherein the scraper (150; 150A; 150B) is provided with, at an end portion on an upstream side wherein upstream refers to the drafting direction of the draft device, in a rotational direction of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b), a scraper edge portion configured to come into contact with the outer circumferential surface of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b), a scraper main-unit portion provided with the scraper edge portion and facing the outer circumferential surface of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b) and a projecting portion (155; 155A; 155B) provided on a surface facing the drafting roller (14a, 14b, 15a, 15b, 17a, 17b) in the scraper main-unit portion, further comprising a pressing unit configured to press the scraper main-unit portion toward the outer circumferential surface of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b), characterized in that an angle (α) being formed by a tangent-line upstream portion that is on a tangent line of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b) passing a contact point with the scraper edge portion and extends from the contact point toward the upstream side of the rotational direction of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b), and by an upstream-side outer surface that is in an outer surface of the scraper edge portion and is a surface facing the upstream side in the rotational direction of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b), is an obtuse angle when viewed along an axial direction of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b) and in that the projecting portion (155; 155A; 155B) is provided in a region sandwiched between a pressing area in which the pressing unit presses the scraper main-unit portion, and the outer circumferential surface of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b). a scraper (150, 150A, 150B) extending along an axial width direction of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b) and configured to come into contact with an outer circumferential surface of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b), wherein the scraper (150; 150A; 150B) is provided with, at an end portion on an upstream side wherein upstream refers to the drafting direction of the draft device, in a rotational direction of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b), a scraper edge portion configured to come into contact with the outer circumferential surface of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b), a scraper main-unit portion provided with the scraper edge portion and facing the outer circumferential surface of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b) and a projecting portion (155; 155A; 155B) provided on a surface facing the drafting roller (14a, 14b, 15a, 15b, 17a, 17b) in the scraper main-unit portion, further comprising a pressing unit configured to press the scraper main-unit portion toward the outer circumferential surface of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b), characterized in that an angle (α) being formed by a tangent-line upstream portion that is on a tangent line of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b) passing a contact point with the scraper edge portion and extends from the contact point toward the upstream side of the rotational direction of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b), and by an upstream-side outer surface that is in an outer surface of the scraper edge portion and is a surface facing the upstream side in the rotational direction of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b), is an obtuse angle when viewed along an axial direction of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b) and in that the projecting portion (155; 155A; 155B) is provided in a region sandwiched between a pressing area in which the pressing unit presses the scraper main-unit portion, and the outer circumferential surface of the drafting roller (14a, 14b, 15a, 15b, 17a, 17b).