There are many causes of nutritional disorders, mainly due to abnormal food digestion, resulting in insufficient intake of nutrients or consuming food with too little nutrition itself. Nutritional disorders can cause symptoms of chronic diseases and require timely improvement. Firstly, one should develop good eating habits and not do strenuous exercise before eating in order to have enough energy to eat and facilitate food digestion. Secondly, consuming nutritious and easy-to-chew foods such as fish and eggs can be of great help to the body’s nutritional supplementation. For nutritional disorders caused by digestive drainage, saline can be used to flush the gastric tube to maintain electrolyte balance, and patients are often given oral care and consume medications to improve the gastrointestinal tract. Exercise also has a certain improvement effect on nutritional disorders. Patients with nutritional disorders should develop a suitable diet plan and also develop a reasonable exercise plan. Adhering to moderate exercise and participating in more outdoor activities can increase metabolism and food nutrient intake.