The invention discloses a method for tacking loops to suit pants. The method comprises the following steps: (1) in the left-to-right direction, enabling a first loop to be positioned on a front pleat,enabling a second loop to be positioned on a seam allowance of a side seam of a front piece, enabling a fourth loop to be positioned in the center of a rear seam, enabling a third loop to be positioned between the second loop and the fourth loop, and enabling the rest three loops to be symmetric to the left surface; and (2) enabling upper sides of the loops to be parallel and level to a waist line, and downwards stitching 4-5 stitching lines back and forth by a distance of 0.6-0.8 cm to firmly sealing the loops. The loops can also be inserted while a waistband is arranged according to assigned positions, and the loops and the waistband are fixed together; and then the loops are seated by a distance of 0.8-1 cm and then are sealed firmly by stitching back and forth. The method is convenient and simple to process and high in efficiency.