To obtain a nonwoven fabric comprising short fibers made of conjugate filament yarns of excellent cooling disposition, spinnability and drawability following their delivery from a spinneret, good in biodegradability which is controllable, rich in both moisture and water absorbability, and having enough mechanical strength to stand its practical use.

First, a melt conjugate spinning is conducted to produce a sheath-core type conjugate fiber made up of core component consisting of a 1st biodegradable aliphatic polyester and sheath component consisting of a 2nd biodegradable aliphatic polyester lower in melting point than the 1st polyester. Subsequently, the conjugate fibers are drawn, the resultant oriented filament yarns are then mechanically crimped and cut to a specified length into short fibers, which are then carded into a short fiber web, which is, in turn, laminated with a natural fiber web followed by subjecting both the webs to ultrasonic fusing treatment into integration through partial fusing, thus affording the objective laminated nonwoven fabric.