The present invention provides a polyacetal resin composition, which comprises a polyacetal resin, and which further comprises the following (A), (B) and (C), with respect to 100 parts by weight of the polyacetal resin: (A) 0.05 to 5.5 parts by weight of a low-density polyethylene having a melt flow rate of 1.0 to 50 g/10 minutes (190° C., 2.16 kg), (B) 0.05 to 2.0 parts by weight of a fatty acid compound (excluding calcium stearate), and (C) 0.001 to 1.0 part by weight of a layered double hydroxide represented by the following general formula (1): [(M2+)x(M3+)y(OH)2(x+y)](An−)x/n−(H2O) (1) (wherein, in the general formula (1), M2+ represents a divalent metal ion, M3+ represents a trivalent metal ion, An− represents an n-valent anion, wherein one or more of the anions are contained in the layered double hydroxide, x represents a number in the range of 0