Yellowish color, anemia, weight, decline in appetite is associated with malnutrition, malignant neoplastic diseases, liver and gallbladder diseases. 1. Malnutrition: such as lack of iron, folic acid and vitamins, can lead to weight loss, anemia and other symptoms. The hemoglobin of anemic patients may be reduced, and the clinical manifestations of yellowish color and decreased appetite may also occur. 2. Malignant neoplastic diseases: such as leukemia, lymphoma and other diseases can also appear anemia, poor appetite, weight loss and other symptoms. 3. Liver and gallbladder diseases: yellowish color and loss of appetite can also occur, and liver function should be checked to see whether there is a combination of transaminase elevation and jaundice. Yellowish color, anemia, weight loss, poor appetite may also have other causes, it is recommended to go to the hospital in time, complete the examination to clarify the cause of the disease, under the guidance of physicians to give targeted treatment or therapy.