A long-fiber nonwoven fabric comprising a long fiber of a bi-component conjugate spun yarn including polyethylene terephthalate and a copolymerized polyester, wherein the long-fiber nonwoven fabric has an apparent density of 0.1 g/cc or more and 0.25 g/cc or less, and has an elongation recovery rate at 50% elongation of 55% or more both in the machine direction and in the cross direction, and the copolymerized polyester is an amorphous polyester and has a glass transition temperature of 50°C or higher, wherein the apparent density is a value of a weight per 1 cm 3, which is determined by dividing a basis weight by a thickness, the basis weight being determined in accordance with JIS-L 1913 6.2 and the thickness being measured with a thickness gauge tester using a terminal of 0.5 g/cm 2, and wherein the elongation recovery rate at 50% elongation and the glass transition temperature are measured in accordance with the methods disclosed in the description, wherein the long-fiber nonwoven fabric is obtained by a method comprising: step A of discharging molten polyethylene terephthalate and a molten copolymerized polyester from a spinneret, cooling and solidifying them, and then pulling and stretching them with an ejector to form long fibers of a bi-component conjugate spun yarn; step B of collecting the long fibers obtained in the step A to form a long-fiber web; step C of temporarily pressure-bonding the long-fiber web; and step D of applying crimp processing to the temporarily pressure-bonded long-fiber web, being a step of immersing the long-fiber web in boiling water at 80°C or higher. the long-fiber nonwoven fabric has an apparent density of 0.1 g/cc or more and 0.25 g/cc or less, and has an elongation recovery rate at 50% elongation of 55% or more both in the machine direction and in the cross direction, and the copolymerized polyester is an amorphous polyester and has a glass transition temperature of 50°C or higher, wherein the apparent density is a value of a weight per 1 cm 3, which is determined by dividing a basis weight by a thickness, the basis weight being determined in accordance with JIS-L 1913 6.2 and the thickness being measured with a thickness gauge tester using a terminal of 0.5 g/cm 2, and wherein the elongation recovery rate at 50% elongation and the glass transition temperature are measured in accordance with the methods disclosed in the description, wherein the long-fiber nonwoven fabric is obtained by a method comprising: step A of discharging molten polyethylene terephthalate and a molten copolymerized polyester from a spinneret, cooling and solidifying them, and then pulling and stretching them with an ejector to form long fibers of a bi-component conjugate spun yarn; step B of collecting the long fibers obtained in the step A to form a long-fiber web; step C of temporarily pressure-bonding the long-fiber web; and step D of applying crimp processing to the temporarily pressure-bonded long-fiber web, being a step of immersing the long-fiber web in boiling water at 80°C or higher. step A of discharging molten polyethylene terephthalate and a molten copolymerized polyester from a spinneret, cooling and solidifying them, and then pulling and stretching them with an ejector to form long fibers of a bi-component conjugate spun yarn; step B of collecting the long fibers obtained in the step A to form a long-fiber web; step C of temporarily pressure-bonding the long-fiber web; and step D of applying crimp processing to the temporarily pressure-bonded long-fiber web, being a step of immersing the long-fiber web in boiling water at 80°C or higher.