A daily basal metabolism of 1800kcal is a slightly higher level. A diet high in calories, protein and vitamins should be maintained to satisfy the body’s consumption, and medical attention is recommended to clarify the cause of the increased basal metabolic rate. Normally, the daily basal metabolism of adult males is about 1400~1500kcal, and that of adult females is about 1200~1300kcal. Therefore, a daily basal metabolism of 1800kcal is a slightly higher level, which needs to be examined if necessary to see if it is caused by pathological factors such as hyperthyroidism. This group of people should maintain a high-calorie, high-protein, high-vitamin diet to maintain the basic energy consumption required for life activities; they can eat high-protein foods such as eggs, fish and meat, carbohydrate-rich foods such as rice, noodles and steamed buns, as well as vitamin-rich foods such as a variety of fresh vegetables and fruits. People with a daily basal metabolism of 1800kcal should maintain a healthy diet to ensure that their diet is nutritious, balanced and comprehensive.