Patients with advanced lung cancer are in heavy condition and have many comorbidities, they will have advanced symptoms such as electrolyte disorders, decreased digestive function, poor appetite, heavy cough, coughing and anemia, etc. According to their condition, patients need to eat the following fruits: i. If patients have electrolyte disorders and low potassium, they should eat more fruits rich in potassium, such as bananas and oranges; ii. If patients have poor appetite and do not think about eating, they can eat fruits with appetizing effect, such as hawthorn, apple, etc.; Fourth, if patients have severe cough and phlegm, they can eat fruits with lung-clearing effect, such as pear, pipa, etc.; Fifth, if patients have combined anemia and qi deficiency, they can eat fruits with blood-supplementing effect, such as red dates, longan, etc. In a word, patients with advanced lung cancer have heavy conditions and many comorbidities, so they should eat appropriate fruits in appropriate amount according to their specific conditions.