Abstract: A wear-resistant and flame-retardant resin composition formed by kneading components (a) through (e) at a proportion in a specific range, wherein:the component (a) is a copolymer of ethylene and .alpha.-olefin having a melt index in a range of 0.1-5 g/10 min., containing comonomers in a range of 10-30 wt %, and containing one or more oxygen atoms in the molecule,the component (b) is linear chain polyethylene of low density having a melt index in a range of 0.1-5 g/10 min., a density in a range of 0.920-0.945, and a durometer hardness of 50-65,the component (c) is polyolefin having a durometer hardness of not less than 60,the component (d) is unsaturated carboxylic acid or polyolefin modified by a derivative thereof, andthe component (e) is a metal hydroxide.