Feeling tired and weak every day can be caused by many reasons: 1, consider the tension of work, heavy work causes tiredness and weakness; 2, due to lack of sleep, daily emotional tension, anxiety leads to tiredness and weakness; 3, cold, fever, flu and other relatively light symptoms will also appear weakness; 4, blood diseases, anemia or chronic wasting diseases will appear tired and weak symptoms; 5, is a serious The alarm bell of disease, such as tumor, will appear in the early stage of fatigue. It is recommended to go to the hospital for examination to understand the situation if such symptoms occur frequently, and also to pay more attention to rest and mood regulation.