The present invention provides a spun-bonded nonwoven fabric which is configured from polyolefin fibers that have excellent spinnability even if the single fiber diameter thereof is small, and which exhibits high flexibility and high uniformity. The present invention relates to a spun-bonded nonwoven fabric which is configured from fibers that are formed from a polyolefin resin and have a single fiber diameter of 6.5-14.5 [mu]m, and which has a melt flow rate of 155-850 g/10 minutes and a CV value of the thickness of 13% or less.本發明提供一種柔軟且均勻性高之紡黏不織布，其包含單纖維之纖維直徑為細徑且紡絲性優異之聚烯烴纖維。本發明關於一種紡黏不織布，其係以包含聚烯烴系樹脂的單纖維之纖維直徑為6.5~14.5μm之纖維所構成，熔體流動速率為155~850g/10分鐘的紡黏不織布，厚度的CV值為13%以下。
