The average length of an adult Chinese male penis is more than 3 centimeters without erection and more than 1.5 centimeters in diameter; an erect length of more than 6 centimeters with a diameter of more than 2 centimeters is considered normal. The correct way to measure the length of the male is to put the measuring tool against the root of the genitals, and then follow the direction of its long axis to the urethral orifice, that is, its overall length; the diameter of the measurement is to use the measuring tool around its circle to measure its circumference, and then converted to diameter. Due to different personal constitution, the growth and development of different people’s genitals are different; but if the value is within the above normal range, it is a normal level, and there will be no change after the completion of the development of adults, such as the discovery of anomalies recommended to immediately consult a doctor, should not be purchased to take the so-called enlargement and thickening of the drug, to avoid the occurrence of serious consequences.