Diet is crucial for people with diabetes. During pregnancy, the pregnant woman’s diet directly determines whether her blood sugar is within the normal range. At present, the following points need to be paid attention to the diet of gestational diabetic patients in clinical practice: First, gestational diabetic patients need to pay attention to the control of total dietary calories. It is advocated that gestational diabetic patients strictly limit the total calorie intake at each meal. It is appropriate to ensure a balance between intake and consumption. Control the blood sugar fluctuation within the normal range. Second, patients with gestational diabetes need to pay attention to the structure of their diet. Pay attention to the scientific intake of meat, high fat content and other foods. Pay attention to the combination of various nutrients, meat and vegetables, coarse and fine grains, and consume more foods with high dietary fiber to promote the metabolism of the body. Third, patients with gestational diabetes need to pay attention to eating less and more meals. This will ensure a continuous intake of energy and avoid a sharp rise in blood sugar in a short period of time due to excessive consumption of a single meal. Finally, people with gestational diabetes need to maintain a scientific and reasonable diet that is both nutritious and light. Avoid excessive daily intake of salts. To sum up, the diet of gestational diabetes patients advocates small and frequent meals, paying attention to the structure of the diet, nutritional mix, and ensuring the total daily intake.