To provide a non-crimped short-cut fiber of polylactic acid, having biodegradability in the soil and atmospheric air, exhibiting good dispersibility when subjected to wet processes for producing a nonwoven fabric, and therefore scarcely causing unevenness of formation in the produced nonwoven fabric.

This non-crimped short-cut fiber is made of a polylactic acid resin, wherein the non-crimped short-cut fiber of the polylactic acid has a single fiber fineness of 0.3-3.0 dtex and a fiber length of 1-15 mm, and further an alkylphosphate metal salt-based finish is applied to surfaces of the fiber in an amount of 0.01-0.1 wt.%.