The present paper attempts has been made to evaluate the “Problems of Ozono Depletion”. Ozone is a form of Oxygen that is present in the earth‟s atmosphere in small amounts, while its presence in the lower atmosphere close to the earth, contributes to air pollution and causes damage to human tissues, its presence in the outer reaches of the earth‟s atmosphere is absolutely vital to life. Located 30 km above the surface of the earth, Its provide a shield against the lethal ultraviolet rays of the sun. If these rays penetrate the ozone layer life could not be possible on earth. Ozone concentration here is 10 part per million. (i.e. 10 parts of ozone per million parts of air).