The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a processing method for improving the hair efficiency and water absorption of fabrics after resin finishing. The method comprises the steps of singeing, desizing, oxygen bleaching, mercerizing, dyeing, liquid ammonia, non-ironing, baking, washing, softening, and pre-shrinking of a pure cotton fabric are carried out in sequence, and the non-ironing process conditions comprise: non-iron resin CR-E: 80-130g / L, a resin catalyst CT-C: 24-39g / L, a fiber protection agent: 10-30g / L, a resin synergist: 10-30g / L, a penetrant MRZ: 1.3g / L, a super hydrophilic auxiliary agent: 10-20g / L, wherein the materials are mixed; and material liquid is added to a padding tank for padding the pure cotton fabric, wherein the nip rate is 65 to 70%, twice padding and twice rolling are carried out, wherein the tank liquid level is 60%, the drying room temperature is 100 to 110 DEG C, and the vehicle speed is 60-70m / min. The fabric finished by the method has a 5min hair effect of more than 2.0 inches, water absorption of less than 10 seconds, and a non-ironing property of more than the 3.2 level.