In many modern medical books, it is pointed out that the function of frenulum is to improve sensitivity, and the erection of penis depends on the congestion of cavernous body, so frenulum has nothing to do with erection. In many countries, the removal of frenulum is one of the surgical schemes to treat premature ejaculation. Too short lacing will affect the erection angle of glans penis and cause a sense of involvement. If the tie is too short, it can be extended. If it can't be extended due to appearance reasons, we can consider removing the top and lower base of the frenum without affecting the pleasure, which will not involve erection.