The exercise of tugging the penis regularly cannot make the penis longer. Men’s penis development stops around the age of 18, and the length of the penis cannot be changed by taking drugs or performing exercises. If men do not operate properly will also lead to the penile corpus cavernosum tear, damage to the corpus cavernosum blood vessels and nerves, which in turn leads to penile pain, swelling, which affects the sexual function of men, leading to erectile dysfunction, leading to pain after erection or inability to erect, and ultimately can affect the life of couples and male reproductive function, men are not recommended to carry out this activity. If men have a short penis, it is recommended that they promptly visit a regular hospital urology department.