The statement that what you eat can make your penis harder is not true. For those who are healthy, nothing can make the penis harder. If you suffer from erectile dysfunction, you need to take drugs such as sildenafil and testosterone undecanoate pills, and you can also eat foods with high nutritional value. Penis is an important male sex organ, with the role of urination, sexual intercourse and ejaculation. Usually, for men who are healthy and do not have sexual dysfunction, nothing you eat can change the hardness of the penis. However, for patients suffering from erectile dysfunction, medication is needed to improve penile hardness. Patients need to take sildenafil, tadalafil and other phosphodiesterase 5 inhibitors under the guidance of the doctor, if it is caused by low androgen, then you need to cooperate with the doctor to take hormone replacement therapy, follow the doctor’s instructions to apply testosterone undecanoate gel pills and other drugs. Secondly, you can eat more lean meat, eggs, beef, mutton, nuts, pig kidney and other foods with high nutritional value. All in all, when the male penis erection hardness is not enough, need to go to the hospital in time, clear specific reasons, with the doctor active treatment.