For patients with various types of diabetes, the general principle of dietary control is low salt, low fat, and a diabetes-specific diet. This means that fats and calories must be controlled. However, pregnancy is a special period that requires an adequate intake of nutrients to meet the needs of the fetus. Therefore, gestational diabetes should be managed based on one's nutritional status, and, after evaluating one's condition, sufficient high-quality protein should be supplemented. It is advisable not to consume fats, such as chicken, duck, fish, and meat, but cooking methods should be chosen carefully. Fish can be consumed steamed, and meat can be steamed or stewed, as these meats are sources of protein. However, soup should not be consumed as it is particularly high in fat. Additionally, foods like pig's feet or animal organs, which have high cholesterol levels, should be consumed in moderation. The overall principle is the same as for diabetes, but it is essential to ensure the pregnant woman's nutritional needs are met and that the fetal weight gradually increases as the pregnancy progresses. Of course, if insulin intervention is needed to some extent, insulin must be used to keep blood sugar levels within the required range.