Always love to sleep but always sleep is not enough, generally is the performance of the cerebral cortex excitability is reduced, the specific reasons are as follows: 1, low quality of sleep or suffering from diseases: patients with early waking up at night, dreamy situation, or the existence of sleep apnea syndrome, episodic sleep disease and other diseases, these reasons are prone to lead to patients with the phenomenon of the old love to sleep. 2, old age and immunity is low: if the patient is old, the presence of low immunity, it is also easy to cause poor spirit and other phenomena, so there is always want to sleep performance. Therefore, the patient needs to clarify the cause of the disease through the relevant examination in time, and then take targeted treatment, the means of examination mainly include blood routine, liver and kidney function, electrocardiogram, cardiac ultrasound, tumor markers, polysomnography and so on, through these examinations, basically can be clear about the causes of low quality of sleep.