There are many causes of erectile dysfunction, the most common of which are a decrease in sex hormone levels, lesions of the penile corpus cavernosum, hypersensitivity of the glans nerve, and deficiency of kidney energy. It is necessary to go to the urology department of a regular hospital for further examination. Blood test for sex hormone level, if it is low, you can take oral testosterone undecanoate capsule for 4-8 weeks of supplemental treatment, and also take oral medication to tonify the kidney and benefit the qi, such as Kirin Pill and Jin Kui Kidney Qi Pill, which have good therapeutic effect. It can be determined whether there is a lesion of the penile corpus cavernosum through the examination of penile blood flow Doppler. If there is a problem of the penile corpus cavernosum, the symptoms can be effectively relieved by taking oral Rhodiola capsules and Thromboxane tablets for 2-3 months with symptomatic treatment. Consider the problem of glans nerve sensitivity, you can check the glans nerve sensitivity, and apply lidocaine gel or dacronin ointment to the glans for 3-4 weeks, the function of penile erection can be restored.