Food classification:

1. Cereals and potatoes: Cereals include rice, pasta, and mixed grains, and potatoes include potatoes, sweet potatoes, and cassava, which mainly provide sugar, protein, dietary fiber, and B vitamins.

2, animal food: including meat, poultry, fish, milk, eggs, etc., mainly to provide protein, fat, minerals, vitamin A and B vitamins. Beans and their products: including soybeans and other legumes, mainly providing protein, fat, dietary fiber, minerals and B vitamins.

3, vegetables and fruits: including fresh beans, roots and stems, leafy vegetables, eggplant and so on. Mainly provide food fiber, minerals, vitamin C and carotene.

4, pure calorie food: including vegetable oil, starch, edible sugar and alcohol, mainly to provide energy. Vegetable oils also provide vitamin E and essential fatty acids.

Diet classification:

1, soft diet, suitable for poor digestion, low fever, chewing difficulties, the elderly, young children and postoperative recovery patients.

2. Semi-liquid diet for patients with poor digestive function, fever, oral disorders, mastication inconvenience and postoperative period.

3. Fluid diet, suitable for patients in critical condition, high fever, oral disorders, dysphagia, after major surgery and acute gastrointestinal diseases.