The root cause of weak erection and weak erection is insufficient blood engorgement of the corpus cavernosum of the penis. There are two reasons that can cause hyperemia, including physiological and pathological, and physiological reasons include lack of sexual knowledge and loss of libido, as well as bad sexual life experience. In addition, the double pressure of the economy and work of adults or the relationship between husband and wife is not harmonious, as well as sexual life process has been interfered with, can lead to weak erection. Pathologic causes are more numerous, including hypogonadism, such as testicular stimulation, leading to a decline in testosterone levels, as well as thyroid disease, diabetes. In addition, hypertension and hyperlipidemia, which are cardiovascular diseases, can also affect erections. Erections are caused by nerve commands from the erection center in the spinal cord. If the spinal cord of the spine is damaged as a result of other trauma or surgery, nerve conduction can also be affected, and erectile function can be impaired. If you reach a certain age, many of the above reasons will appear in combination, not in isolation, so for erectile dysfunction can not simply think that it is a kidney deficiency or a certain cause, but should be considered in a comprehensive manner, comprehensive treatment.