The causes of insufficient blood supply to the corpus cavernosum may be bad life habits, underlying diseases of the organism, gonadal infections and so on. 1. Bad life habits: such as mental stress, staying up late, drinking alcohol and other related factors can lead to a decrease in the level of blood sex hormones, which reduces the amount of blood engorgement of the corpus cavernosum of the penis, softens the texture of the penis, and exhibits a state of weakness. 2. Basic diseases of the organism: for example, unstable blood sugar in diabetic patients can lead to imbalance of endocrine metabolism, affecting the function of major organs, and one of the symptoms is insufficient blood supply to the corpus cavernosum of the penis. 3. Gonadal infections: bacterial infections of the prostate, testicles and other parts of the body, the inflammatory stimulation of the relevant parts of the body will affect the secretion of sex hormones, which is a common infectious disease leading to insufficient blood supply to the corpus cavernosum of the penis. There are many other causes of insufficient blood supply to the corpus cavernosum, so it is recommended that patients consult a doctor in a timely manner to clarify the cause of the disease and then carry out the relevant treatment.