Non-ejaculation is not necessarily a disease. Male ejaculation can be categorized into physiological as well as pathological causes, which may be functional ejaculation due to insufficient sexual stimulation and other factors, as well as organic ejaculation due to neurological or endocrine lesions. 1. Physiological reasons: men lack the necessary knowledge of sex, resulting in insufficient stimulation of the penis during sex, thus unable to ejaculate normally, or over-indulgence in sexual intercourse, after frequent sex, which can easily lead to over-fatigue of the body, and can not ejaculate smoothly. 2. Pathological reasons: neurological lesions and injuries can also affect normal ejaculation in men, such as lesions in the lateral lobes of the brain, the spinal cord is injured under the action of certain factors, which may cause neurological damage, resulting in abnormal ejaculation function. In addition, hypoplasia of endocrine glands such as the pituitary gland, gonads or thyroid gland can cause damage to the peripheral nerves, resulting in abnormal ejaculation. There are many reasons why men do not ejaculate, so it is recommended to go to the hospital for active treatment.