This is the lack of hardness of the penis. This situation suggests that you can usually exercise more properly to increase the sexual vitality of the body, so that the sexual ability will be improved. It is also recommended that you usually eat a variety of aphrodisiac foods, such as beef, mutton, seafood, leeks, eggs, etc., can also improve male erection. The most effective method oral medication, representative drugs are sildenafil, tadalafil, vardenafil, these are type 5 phosphodiesterase inhibitors, can quickly improve penile erection and complete a reasonable sexual intercourse. It is recommended to check the body for other diseases, many diseases and drugs can also lead to a decreasing trend of erectile function of the penis.