Inadequate blood supply to the penis has different clinical manifestations depending on the severity. In more severe cases, the penis may not be able to get an erection, or impotence. In the milder type, mainly during erection, one may feel a weak erection or weakness in the middle of sexual intercourse, and the spongy body of the penis is relatively weak in daily life, or the glans has a wrinkled and dull color. A cyanotic appearance can also occur due to insufficient blood supply, and painful symptoms can also occur in severe blood supply deficiencies, which are due to a lack of nutrients in the blood, resulting in tissue hypoxia and increased pain sensitivity. Insufficient blood supply to the penis is a common clinical cause of male sexual dysfunction, which needs to be clarified by penile cavernosography and penile color Doppler. Some congenital anatomical abnormalities or traumatic injuries that lead to arteriovenous fistulas between the corpus cavernosum of the penis, resulting in inadequate blood supply, should be detected in the test results, and targeted treatment, and sometimes can be reversed.