The Chinese male penis standard, generally refers to about 12.9 centimeters in the erect state and 8.8 centimeters in the soft state, as long as it is in this length range, it is generally a normal penis size. The penis, which consists mainly of two penile corpus cavernosums and one urethral corpus cavernosum, is an important male reproductive organ with the function of sexual intercourse, as well as urination and ejaculation. It is generally believed that penis size does not have a clear relationship with sexual function, the key is the hardness and endurance after erection, as long as it does not affect sexual life, it is generally normal. When there are problems with the male reproductive organs, patients are advised to go to the hospital in time for examination and diagnosis.