Sleepiness and fatigue can be caused by many reasons: First, it is more common to see patients with sleep disorders clinically, due to long time poor sleep, lack of sleep, poor brain rest, the patient can appear sleepy, fatigue, it is recommended to adjust sleep as the main. Second, always sleepy and tired can also be seen in patients with anemia, due to anemia can appear dizziness, general drowsiness, weakness, when necessary to identify the cause of anemia, can be given to supplement the hematopoietic material. Third, always sleepy and tired clinically can also be seen in patients with diabetes mellitus or diabetic nephropathy, because when the blood sugar is particularly high or low, the patient can appear sleepy and tired, and in serious cases, diabetic ketosis, etc. Drowsiness and fatigue can also be seen in the early stage of tumor. For tumor is not mainly pain in a certain area, but only drowsiness and discomfort around the body may appear in the early stage, and systematic examination can be conducted if necessary.