A spunbonded nonwoven fabric is configured by a composition including: a propylene homopolymer having a melting point of 140℃ or higher； polyethylene； and at least one kind of polymer selected from the group consisting of polymers represented by (I) and polymers represented by (II). The total content of the polymers represented by (I) and polymers represented by (II) is in the range of from 5 mass% to 30 mass% relative to the total amount of the composition. The polymers represented by (I) are random copolymers of propylene and α-olefin, the α-olefin having a specific carbon number, and the polymers represented by (II) are propylene homopolymers that satisfy specific physical properties and have a melting point of less than 120℃.一種紡絲黏合不織布，其包括組成物，所述組成物包含：熔點為140℃以上的丙烯均聚物；聚乙烯；以及選自由（I）中所示的聚合體及（II）中所示的聚合體所組成的群組中的至少一種聚合體；且相對於組成物的總量，（I）中所示的聚合體及（II）中所示的聚合體的總含量為5質量%～30質量%的範圍。（I）中所示的聚合體為丙烯與特定碳數的α-烯烴的無規共聚物，（II）中所示的聚合體為滿足特定的物性的熔點未滿120℃的丙烯均聚物。
