PURPOSE: To provide a polyethylene compsn. which is freed from the problem of environmental stress cracking, consisting of two ethylene polymers.

CONSTITUTION: 5W95wt% ethylene/3W18C α-olefin random copolymer (A) having a density of less than 0.928g/cm3 and the max. m.p. of 100W134°C (by differential thermal analysis), mainly composed of ethylene and 95W5wt% ethylene homopolymer or ethylene/3W18C α-olefin random copolymer (B) having a density of 0.928g/cm3 or above and higher by 0.05g/cm3 than that of component A, are melt-kneaded to obtain a PE compsn. having a density of 0.910W0.950/cm3 and an MFR of 0.1W100g/10min.