Very sleepy, very tired but can not sleep for the following reasons: First, overexertion causes the human brain cells in a state of overexcitation, the central nervous system is overexcited, resulting in difficulty falling asleep, can not sleep, it is recommended that patients take appropriate rest, if necessary, with the Chinese medicine clear brain and rejuvenate liquid, and tranquilize the brain oral liquid to adjust; Second, very sleepy, very tired but can not sleep, be alert to patients are due to mental illnesses, such as depression, anxiety disorders, due to the increase in secretion of 5-hydroxytryptamine in the body, with memory loss, etc., can be given to patients oral 5-hydroxytransmitter inhibitors, such as Derek. For example, depression, anxiety, due to adverse emotional stimuli leading to increased secretion of 5-hydroxytryptamine in the body, sleeplessness, accompanied by memory loss, the patient can be given oral 5-hydroxy acid transmitter inhibitors, such as Dailixin, etc.; Third, very sleepy, very tired but can not sleep, clinically seen in elderly patients with poor cardiopulmonary function, due to cardiac insufficiency, the patient appears sleepy, tired, but sleep due to wheezing, suffocating The patient is sleepy and tired due to cardiac insufficiency, but cannot sleep due to shortness of breath and suffocation.