The next day after the ejaculation does not ejaculate may be associated with sexual fatigue, long-term masturbation, mental tension and other factors. 1. Sexual fatigue: Excessive frequency of sexual intercourse or masturbation will lead to sexual fatigue, sexual fatigue spinal cord ejaculation center dysfunction will trigger ejaculation. 2. long-term masturbation: masturbation stimulation than intercourse stimulation is more intense, the ejaculatory center is accustomed to the strong stimulation of masturbation, may not reach the ejaculation threshold during sexual intercourse, thus leading to non-ejaculation. 3. Mental tension: If there is mental tension, guilt and shame after ejaculation on the previous day, it will also inhibit ejaculation. It is recommended that the patient go to the hospital for consultation to clarify the cause as early as possible, adjust the masturbation habit in time, and recommend the patient to combine work and rest and actively participate in outdoor physical exercise.