Swimming pool chlorine usually does not cause lung cancer, but may have a certain effect on children, the elderly and allergic people. If you do not wash in time after swimming, it may lead to dry skin, induce eczema, irritate the mucous membrane of the respiratory tract, and damage the hair. 1. Dry skin: chlorine has a certain degree of irritation of the skin, may lead to dry skin, cracks, pain, swimming should be promptly washed with warm and cool water, and apply moisturizing cream. 2. Induce eczema, irritation of respiratory mucosa: for people with allergies, excessive chlorine may induce allergic diseases, if accumulated on the skin, it is eczema, so that the respiratory tract is damaged may lead to asthma. 3. Damage to the quality of hair: Chlorine can damage the protein arrangement of the hair, which is manifested by loss of luster and, if there is dyeing, by fading. It is recommended to choose a large swimming pool equipped with conventional circulation filtration equipment and disinfection facilities, swimming as much as possible to allow children to wear swimming goggles to avoid eye damage, and always take a bath after swimming. If there are any uncomfortable symptoms, you need to consult a doctor in time.