A method for forming two-piece can using a laminated steel sheet as a base material, comprising the steps of: blanking the laminated steel sheet; forming a can body in a shape of cylinder integrated with bottom by: applying repeated several cycles of drawing to a circular blank of the laminated steel sheet, obtained by blanking the laminated steel sheet; forming a tapered part extending outward from the can body in the radial direction thereof at a tip of the opening of the can body in the repeated several cycles of drawing; applying diametral reduction to the tapered part to the diameter of the can body; and applying diametral reduction to the opening of the can body to a diameter smaller than the diameter of the can body, while satisfying the formulae and, 1.5 ≤ h / R − r d / R ≤ 0.25 where, h is the height from the can bottom to the tip of the opening, R is the circular blank positioning radius, r is the radius of the can bottom, and d is the radius of the tip of the opening, characterized in that the inclination angle θ on the tapered face at inside of the can body to the central axis of the can body is 20°≤ θ ≤ 70°, and the degree of extension of the tapered part outward from the can body in the radius direction thereof satisfies formula 1.2 ≤ dt / r ≤ 2.5 where dt is the radius of the extended part and r is the radius of the can body. blanking the laminated steel sheet; forming a can body in a shape of cylinder integrated with bottom by: applying repeated several cycles of drawing to a circular blank of the laminated steel sheet, obtained by blanking the laminated steel sheet; forming a tapered part extending outward from the can body in the radial direction thereof at a tip of the opening of the can body in the repeated several cycles of drawing; applying diametral reduction to the tapered part to the diameter of the can body; and applying diametral reduction to the opening of the can body to a diameter smaller than the diameter of the can body, while satisfying the formulae and, 1.5 ≤ h / R − r d / R ≤ 0.25 where, h is the height from the can bottom to the tip of the opening, R is the circular blank positioning radius, r is the radius of the can bottom, and d is the radius of the tip of the opening, applying repeated several cycles of drawing to a circular blank of the laminated steel sheet, obtained by blanking the laminated steel sheet; forming a tapered part extending outward from the can body in the radial direction thereof at a tip of the opening of the can body in the repeated several cycles of drawing; applying diametral reduction to the tapered part to the diameter of the can body; and applying diametral reduction to the opening of the can body to a diameter smaller than the diameter of the can body, while satisfying the formulae and, 1.5 ≤ h / R − r d / R ≤ 0.25 where, h is the height from the can bottom to the tip of the opening, R is the circular blank positioning radius, r is the radius of the can bottom, and d is the radius of the tip of the opening, characterized in that the inclination angle θ on the tapered face at inside of the can body to the central axis of the can body is 20°≤ θ ≤ 70°, and the degree of extension of the tapered part outward from the can body in the radius direction thereof satisfies formula 1.2 ≤ dt / r ≤ 2.5 where dt is the radius of the extended part and r is the radius of the can body.