A penis of 11cm in a 14 year old male is normal. The normal length of the penis is affected by race, heredity, growth and development, and individual differences are large. The length of the penis of the Chinese people in the state of weakness, on average, about 4 ~ 6cm. in the state of erection, can reach 10 ~ 16cm. and 14 years old is still in the puberty period, is still in the stage of growth and development, so, in this value range, is normal. In fact, most men’s penis length, are within the normal range. Of course, some people will have a longer penis, some will be slightly shorter, as long as it does not affect the future sex life is not related.