Patients with lung cancer are allowed to eat lychee. Lychee contains glucose, many vitamins, proteins and fats, and contains various nutrients such as folic acid, arginine and tryptophan, which are very beneficial to human health. From traditional Chinese medicine, it can nourish the spleen and benefit the lungs, reduce swelling and stop bleeding, warm the middle and relieve pain, nourish the heart and calm the mind. Therefore, patients with lung cancer often eat lychee, which can promote appetite, improve the ability to fight diseases and enhance immunity. However, patients with lung cancer should not eat more of it. As lychee is warm in nature, it can cause internal heat, mouth ulcers, nasal bleeding, cough and phlegm. Because patients with lung cancer are mostly deficient in qi and yin, yin deficiency and internal heat, eating more lychee can aggravate the disease in some patients. Therefore, eating lychee must be in moderation and nutrition should be balanced.