The root of the penis cannot be thickened by means of exercise. The penis is an important male sex organ that serves for urination and ejaculation. Usually during puberty, the penis will enlarge and thicken, but after maturity, the penis root cannot be thickened through exercise. Daily can be through running, swimming, sit-ups and other ways to exercise the body, enhance their physical fitness exercise, assist in exercising muscles. If the appearance of the penis structure is normal, the length is smaller than the same age group when. If patients with abnormal gonadal function, chorionic gonadotropin and gonadotropin-releasing hormone treatment can be taken; patients with ineffective drug treatment can be treated with surgery, such as penile lengthening; if the penis is too small, it can also be treated with penile reconstruction, penile prosthesis placement and other methods. The penis generally can not be thickened by exercise, it is recommended that patients with penile abnormalities go to a regular hospital for timely consultation and treatment. The above drugs should be used under the guidance of a doctor. Daily attention should be paid to their own hygiene, wear cotton underwear, keep local hygiene clean.