Patients with liver cancer combined with lung metastasis can usually drink red ginseng water, but contraindications need to be ruled out. Liver cancer is a consumptive disease, and patients are prone to symptoms such as loss of appetite, indigestion, nausea, vomiting, poor appetite (poor appetite), and are prone to unbalanced nutrition or malnutrition. Active nutritional treatment is often needed to ensure good physique in order to tolerate surgery, chemotherapy, targeted therapy and immunotherapy. Liver cancer combined with lung metastasis indicates that the patient has entered the advanced stage. Dietary principles for liver cancer patients are mainly high protein diet that is easy to be digested and absorbed, avoiding greasy food, and also matching with vegetables and fruits to help defecation. Red ginseng can replenish qi, consolidate the essence and support the energy, enhance the effect of one’s physical strength, and help to relieve patients’ postoperative or post-chemotherapy discomforts; however, contraindications such as allergy need to be excluded, and one should not drink it in excess. Besides paying attention to nutritional diet, avoiding smoking and drinking in daily life, developing good living habits and proper exercise can help liver cancer patients receive comprehensive treatment better. In conclusion, liver cancer patients can usually drink red ginseng water, and it is recommended to go to regular hospitals and follow the doctor’s instructions to avoid delaying the condition.