A method for predicting processability of polymer resin comprising the steps of: measuring a molecular weight distribution curve of the polymer resin using a gel permeation chromatography at a temperature of 160°C, wherein a log value of a molecular weight MW (log MW) is denoted by x-axis, and a molecular weight distribution to the log value (dwt/dlog MW) is denoted by y-axis), and wherein the MW is measured in g/mol; dividing the section between 3.0 and 7.0 on the x-axis of the molecular weight distribution curve into four equal parts to obtain the integral value of the molecular weight distribution curve at each section; and calculating a predicted value of a die swell ratio value from the integral value according to the following Equation 1 using the integral value: Die swell ratio, PV = − 0.136 * A 1 + − 0.1152 * A 2 + − 0.1033 * A 3 + − 0.181 * A 4 + 13.97 in Equation 1 above, A 1 is an integral value of a molecular weight distribution curve in the section where log MW is 3.0 to 4.0, A 2 is an integral value of a molecular weight distribution curve in the section where log MW is 4.0 to 5.0, A 3 is an integral value of a molecular weight distribution curve in the section where log MW is 5.0 to 6.0, A 4 is an integral value of a molecular weight distribution curve in the section where log MW is 6.0 to 7.0, and the integral value of A 1 to A 4 means relative values when the integral value of the entire molecular weight distribution curve is 100. measuring a molecular weight distribution curve of the polymer resin using a gel permeation chromatography at a temperature of 160°C, wherein a log value of a molecular weight MW (log MW) is denoted by x-axis, and a molecular weight distribution to the log value (dwt/dlog MW) is denoted by y-axis), and wherein the MW is measured in g/mol; dividing the section between 3.0 and 7.0 on the x-axis of the molecular weight distribution curve into four equal parts to obtain the integral value of the molecular weight distribution curve at each section; and calculating a predicted value of a die swell ratio value from the integral value according to the following Equation 1 using the integral value: Die swell ratio, PV = − 0.136 * A 1 + − 0.1152 * A 2 + − 0.1033 * A 3 + − 0.181 * A 4 + 13.97 in Equation 1 above, A 1 is an integral value of a molecular weight distribution curve in the section where log MW is 3.0 to 4.0, A 2 is an integral value of a molecular weight distribution curve in the section where log MW is 4.0 to 5.0, A 3 is an integral value of a molecular weight distribution curve in the section where log MW is 5.0 to 6.0, A 4 is an integral value of a molecular weight distribution curve in the section where log MW is 6.0 to 7.0, and the integral value of A 1 to A 4 means relative values when the integral value of the entire molecular weight distribution curve is 100. A 1 is an integral value of a molecular weight distribution curve in the section where log MW is 3.0 to 4.0, A 2 is an integral value of a molecular weight distribution curve in the section where log MW is 4.0 to 5.0, A 3 is an integral value of a molecular weight distribution curve in the section where log MW is 5.0 to 6.0, A 4 is an integral value of a molecular weight distribution curve in the section where log MW is 6.0 to 7.0, and the integral value of A 1 to A 4 means relative values when the integral value of the entire molecular weight distribution curve is 100.