Most important features of puberty are described. The puberty is the age of development of sexual characters. In females it appears between 10 and 15 years +/- 1 year whereas in males signs of puberty are visible between 11 and 15 years. In our country menarche appears at the mean age of 12 years and 2 months +/- 1 year and 2 months. Precocious puberty in females is that which appears before 8 years and 6 months and in males before 10 years. Delayed puberty is that which appears in females after 15 years and in males after 16. Nowadays is possible to keep off puberty when it is too soon by means of an analogous of LH-RH and as the result the subject reaches a better statural growth. The puberty should not be confused with the adolescence which is characterized by psycho-social maturity.