Liver cancer metastasis to the lungs and inability to eat may be caused by compression of tumor, loss of appetite and psychological factors. When liver cancer metastasizes to the lungs, it is usually in the advanced stage of liver cancer, and then the enlarged liver may compress the stomach and intestines, resulting in obstruction, which makes the patient unable to eat. It may also be due to the advanced stage of the disease, the patient’s pain symptoms are more serious, the liver function decreases seriously, the patient’s body is weak, and the digestive function of the stomach and intestines also decreases, the patient has a loss of appetite and can’t eat. In addition, the patient’s mentality may be more negative, due to the disease, resulting in both physical and mental impact, resulting in symptoms of depression, so the performance of eating. At this time, family members should give comfort, guidance and encouragement, so that patients regain confidence in facing the disease, and strive to prolong life and improve the quality of life. It is recommended that the patient cooperate with the doctor to actively carry out the treatment, if still unable to eat, it is necessary to timely supplement through parenteral nutrition.