Generalized fatigue, weakness and lack of appetite are mostly considered to be caused by colds, weakness of the spleen and stomach, and deficiency of qi and blood. 1. Colds: Colds can be caused by external wind and dampness, which can weaken the body and lead to generalized fatigue and lack of appetite, usually accompanied by coughing and fever. 2. Weakness of the spleen and stomach: when the spleen and stomach are weak, the transportation of water and grains is impaired, and the whole body can not get the nutrition of water and grains, so there are symptoms of general fatigue and lack of appetite, accompanied by symptoms such as lack of energy and laziness (lack of strength, do not want to talk), and body emaciation. 3. Qi and blood deficiency: Chinese medicine believes that qi and blood are two important substances necessary for human life activities, qi and blood deficiency when qi and blood are deficient, it is difficult to nourish the body, thus appearing generalized fatigue and weakness, lack of appetite, usually accompanied by self-sweating (involuntary sweating during the day, sweating is aggravated by a little movement), dizziness, palpitations, insomnia and other symptoms. It is recommended to go to the hospital for examination and treatment by a professional Chinese medicine practitioner after diagnosis. If medication is needed, it should be used in strict accordance with the doctor’s prescription.