For those with functional erectile dysfunction, treatment generally involves psychotherapy, especially in combination with food therapy, and most people can achieve good results. Dietary adjustments should follow the principles of warming the kidneys, tonifying the stomach, enriching essence, and strengthening yang. Supplementing through food is better than through medication; ingesting elements required for male sexual function via food can prevent and treat erectile dysfunction. The principle differs from that of treating erectile dysfunction with oats; the following foods mainly focus on tonifying the kidneys and strengthening yang.