The invention discloses a chemical fiber conveying and impurity scraping device, belonging to the field of chemical fiber processing mechanical equipment. The device disclosed by the invention comprises a conveying bracket, a feeding mechanism, guide rollers and a conveying adjusting mechanism, wherein two guide rollers are horizontally and rotationally connected to the conveying bracket along the chemical fiber conveying direction in sequence; fixing plates are respectively horizontally arranged on the upper sides of the two guide rollers; impurity scraping plates are vertically arranged on one sides of the fixing plates; the conveying adjusting mechanism comprises a tension adjusting roller, lifting hydraulic cylinders and a lifting bracket; the tension adjusting roller is horizontally arranged on the lower side of the middle of each of the two guide rollers and is horizontally and rotationally connected to the lifting bracket; the lifting hydraulic cylinders are respectively vertically arranged on two sides below the lifting bracket; the feeding mechanism comprises an adjusting lead screw, a feeding bracket and a feeding roller; and the feeding roller is horizontally and rotationally connected to the feeding bracket. The device disclosed by the invention is simple in structure, chemical fibers can be rapidly and efficiently conveyed and can be subjected to impurity scraping in the conveying process, and the production use requirements are met.