Erectile weakness and softness without ejaculation are considered to be erectile dysfunction, which may be caused by psycho-psychological factors, vascular factors, endocrine factors, traumatic factors and so on. 1. Psychosomatic factors: Discord between husband and wife, excessive mental tension and anxiety, and unpleasant sexual experiences may all have an impact on men’s mental health and may lead to erectile dysfunction. 2. Vascular factors: diseases such as hypertension and diabetes may affect the blood supply to the corpus cavernosum, resulting in insufficient blood supply to the corpus cavernosum, which may lead to erectile dysfunction. 3. Endocrine factors: hypothyroidism, hypogonadism and other factors may cause endocrine imbalance, which may lead to erectile dysfunction. 4. Trauma factors: such as pelvic trauma or penile fracture, resulting in damage to the genitals, may cause erectile dysfunction, and in severe cases, may cause men to lose their sexual ability. Weak erection and softness without ejaculation may also be due to other reasons, and it is recommended to consult a doctor for examination and treatment so as not to delay the condition.