Objective To investigate the effects of respiratory training on oral feeding ability, feeding response, transition time, hospitalization time, gastric tube indwelling time and recovery time to birth weight in premature infants. Methods The Neonatal Intensive Care Unit(NICU) preterm infants who were in accordance with the inclusion criteria were divided into the observation group and the control group according to the random number method. The observation group was 20 cases, the control group was 21 cases. The control group implemented NICU routine nursing, including oral nursing, umbilical nursing, body position nursing. The observation group received respiratory training exercises on the basis of the control group, and the oral feeding ability of the two groups of premature infants was evaluated and recorded after intervention at the beginning of 0, 5, 10, 15 d.The feeding reaction, transition time, the hospitalization time and gastric tube indwelling time were recorded in two groups of preterm infants. Results The non-nutritive sucking scores after intervention at the beginning of 0, 5, 10, 15 d were (31.10±5.57), (37.50±4.86), (53.20±7.60), (74.90±4.77) points in the observation group. The non-nutritive sucking scores after intervention at the beginning of 0, 5, 10, 15 d were (31.91±5.56), (33.36±6.17), (45.54±5.39), (62.82±6.78) points in the control group. There was no significant difference after intervention at the beginning of 0, 5 d between the two groups (t=-0.333,1.694, all P >0.05), but had the significant difference after intervention at the beginning of 10,15 d (t=2.683, 4.676, all P 0.05). Conclusions Breathing exercises can improve the oral feeding ability and improve the feeding effect of premature infants. Key words: Breathing exercises; Premature infants; Feeding; Oral feeding ability