Insomnia may be caused by impotence and premature ejaculation after sex, psychological abnormalities, but also may be the patient himself by environmental factors, food factors and so on. 1. Psychological abnormalities: may be due to impotence, premature ejaculation and other diseases, so that the patient has a low self-esteem, anxiety and other reasons, can make the quality of sleep is reduced, so that impotence and premature ejaculation after sex insomnia phenomenon. 2. Environmental factors: the sleeping environment may be noisy, the temperature is not suitable, the light is too strong and other reasons, can affect the patient’s sleep quality, thus the phenomenon of insomnia. 3. Food factors: may be due to drinking coffee, tea and other foods, so that the cerebral cortex of the nerve excitation, so that the normal sleep caused by insomnia. It is recommended that patients with impotence, premature ejaculation and insomnia after sex go to the hospital in a timely manner, and follow the doctor’s instructions for treatment, so as to avoid delaying the condition.