Pink frothy sputum is mostly caused by the infiltration of fluid from the capillary left vessels into the interstitial or alveolar lung. A common clinical case of pulmonary edema is acute heart failure. Because acute left heart failure causes increased pulmonary venous pressure, increased plasma exudation in alveolar capillaries, and even capillary rupture, forming acute pulmonary edema, which edema fluid is protein-containing, plasma or pink, and under the action of airflow, it will form foamy, just like increased urine protein content is bubbly. So, what is a suitable diet for patients with pink foamy sputum? The following is the diet suitable for patients with pink foamy phlegm: 1. Eat more food containing vitamin A, C and calcium. Foods containing vitamin A such as pig liver, egg yolk, cod liver oil, carrots, pumpkin, apricot, etc.; have the effect of moistening the lungs and protecting the airways; foods containing vitamin C have the function of anti-inflammatory, anti-cancer and anti-cold, such as dates, grapefruit, tomatoes, green peppers, etc.; foods containing calcium can enhance the anti-allergic ability of the airways, such as pork bones, green vegetables, tofu, sesame paste, etc. It should be noted that dairy products can thicken the sputum and make it difficult to discharge, thus aggravating the infection, so the intake of milk and its products should be limited. 2, supply sufficient protein and iron. Diet should eat more lean meat, animal liver, tofu, soy milk, etc.. These foods are not only rich in high quality protein and iron, and no phlegm on the fire, to enhance the patient’s physical fitness, improve the resistance to disease, and promote the repair of damaged tissue. 3, often eat edible mushrooms can regulate the immune function. For example, shiitake mushrooms and mushrooms contain mushroom polysaccharide and mushroom polysaccharide, which can enhance human resistance and reduce the attack of bronchial asthma. 4.Increase liquid intake. Drink a lot of water, which is good for sputum dilution and keeping the airways open; drink at least 2000ml of water per day (which includes water in food). Patients with emphysema should control their diet in their life while being treated, which can not only relieve the disease and avoid complications, but also shorten the recovery time and recover faster.