Carbohydrates, proteins as well as foods with high fat content can raise blood sugar, such as rice, milk and cakes. 1. Carbohydrates: Carbohydrates are polysaccharides, which can be derived from staple foods such as rice, noodles, etc. They are the main factors affecting blood glucose, and excessive intake of staple foods will lead to unstable blood glucose in patients. 2. Protein: Excessive intake of protein will also increase blood sugar, because a large amount of protein will be converted into sugar or fat in the body, so protein also has a certain effect on blood sugar. 3. Fat: Excessive intake of high-fat food will increase blood sugar because fat can also be converted to glucose. It is recommended that patients with high blood sugar should eat a diet low in sugar and fat, try to eat small and frequent meals, consume more high-fiber foods, insist on exercise, and quit smoking and drinking.