Want to make the penis longer and thicker, in puberty, the penis can develop; after puberty, the penis will not develop, can be improved through pelvic floor muscle training, the use of drugs, penile region injection of hyaluronic acid and other methods. 1. Pubertal growth and development: you can supplement nutrition appropriately and use testosterone and so on under doctor’s guidance if necessary. 2. Pelvic floor muscle training: after the end of puberty, the penis and the height of the same no longer grow and change, this time can also be through some exercise, such as the pelvic floor muscle exercise or anal lifting exercise, which can increase the blood supply to the penis, so that the penis erection is more adequate. 3. Use of drugs: can be improved by taking drugs, such as sildenafil, can make the penile corpus cavernosum more fully congested, can improve the hardness of erection and erection time, so that the penis fully erected. 4. Hyaluronic acid injection: Through the surgical method, hyaluronic acid is injected into the penis, which is a relatively safe material and basically will not cause bad effects on health. The wound of hyaluronic acid injection is relatively small, so it recovers quickly, and will not affect the normal life. It is recommended that patients go to the hospital for consultation and choose the suitable method for improvement under the guidance of the doctor.