Rice contains about 75% carbohydrate, 7%-8% protein, and 0/.3%-1.8% fat, which is rich in B vitamins. Rice enters the spleen, stomach and lung meridians, and has the functions of tonifying the middle warmer, nourishing yin and moistening the lungs, invigorating the spleen and regulating the stomach, and relieving polydipsia. Ancient health experts also advocated "morning porridge" to produce fluid. Therefore, patients with cough and constipation caused by lung yin deficiency can cook porridge with rice in the morning and evening.