The lack of sleepiness, also known as insomnia, can be caused by many reasons, including non-disease factors and disease factors. Non-disease factors such as irregular sleep, sleep environment, etc., and disease factors are mostly some mental illnesses. If there is no sleepiness need to promptly adjust the lifestyle or promptly seek medical differential diagnosis. First, non-disease factors 1, emotional tension: due to excessive stress in life or work, causing mental tension or fear, which leads to no sleepiness or sleep difficulties; 2, poor sleep habits: such as lying in bed watching TV or playing games before going to bed, so that the brain has been in a state of hyperactivity, or sleep pattern disorders, will also lead to no sleepiness when going to sleep; 3, sleep environment changes: such as changing the bed, or sleep environment with Noise, light is too bright, and the temperature is too high, too low will affect the sleep, resulting in no sleepiness. Second, disease factors 1, mental illness: common neurasthenia, anxiety, depression, bipolar disorder, etc., can lead to the occurrence of sleep problems, common no sleepiness, difficulty falling asleep or maintaining sleep difficulties; 2, other diseases: such as the existence of their own digestive system diseases, urinary system diseases, cardiovascular diseases, etc., these diseases may cause body pain, breathing difficulties, restlessness, etc. These can lead to difficulty in falling asleep and no sleepiness.