Infancy and early childhood is a period of rapid development for children and an important time for developing eating skills. Children develop from the sucking and swallowing reflexes innately present at birth to mature oral motor functions, such as biting, chewing, swallowing and coordinated oral movements, and the transition from eating liquid foods to adult solid foods and from nurturer feeding to children eating on their own, all need to be completed during this period. Since sucking and eating are important early neurodevelopmental milestones, failure to achieve successful sucking and eating can significantly affect the development of later eating skills. Feeding difficulties are a common problem in infancy and early childhood and are divided into feeding problems and feeding disorders, which can occur in normal children during growth and development or in children with chronic or severe illnesses and developmental disorders or abnormalities. Common feeding problems are underfeeding, partial feeding, picky eating, delayed self-feeding ability, poor feeding behavior and abnormal food habits. Feeding disorders are refusal to eat, vomiting, choking, etc., which can cause weight gain or loss. 80% of children with developmental disorders have varying degrees of feeding disorders. 1% to 2% of severe feeding disorders occur in infancy, and 70% of these severe feeding disorders last until 4 to 6 years of age. Feeding disorders are also associated with later cognitive developmental deficits, behavioral problems, and eating disorders. Neurodevelopmental delays due to epilepsy, cerebral palsy, brain developmental abnormalities, chromosomal abnormalities, and other disorders can also cause feeding difficulties in children. Neurodevelopmental delay often affects the development of oral functions such as biting, chewing and swallowing, resulting in poor lip closure, muscle stiffness or muscle weakness, and poor tongue movement during feeding, leading to prolonged feeding time and even aversion to eating. Feeding difficulties can also occur in those with chronic respiratory diseases or abnormal development of respiratory organs, with severe laryngeal cartilage softening and tracheal softening, chronic lung diseases, and a high percentage of children who have been hospitalized in NICU after delivery, especially those who have used ventilator-assisted breathing. If you have a baby with long-term feeding difficulties, parents must be vigilant and seek medical attention at the Department of Pediatric Rehabilitation of the Third Affiliated Hospital of Zhengzhou University as soon as possible to clarify the cause so as not to delay the condition. The best treatment period will be missed.