Waking up after an hour or so of sleep is considered to be caused by psychological factors, low blood pressure, low blood sugar and environmental factors, as follows: 1. Psychological factors: excessive mental stress, anxiety, depression, leading to too much thinking before going to bed, which in turn affects the quality of sleep. 2. Low blood pressure, low blood sugar: easy to cause poor mental state, fatigue, sleep easy to wake up. 3. Environmental factors: sleeping environment is too cold, too hot, or too noisy, are not conducive to sleep. It should be noted that, sleep an hour or so to wake up there may be other reasons, such as neurasthenia and taking medication, it is recommended that patients go to the hospital to check the cause of the disease to give targeted treatment.