Measles is highly contagious and is spread mainly through droplets and direct contact with respiratory secretions of measles patients. Droplet transmission is the main route of transmission. Patients talking, coughing or sneezing can cause measles virus to enter the air and invade normal humans through breathing through the mouth, throat, nose or conjunctive membrane of the eyes, and rapid multiplication of measles virus in the respiratory tract can lead to measles, while direct contact with patients’ secretions or objects can also lead to measles virus infection. Therefore, measles transmission is relatively simple and humans are the only host of measles virus. The measles virus has a low survival rate outside the human body and in a fluid air environment, surviving only half an hour in sunlight. Therefore, daily ventilation of rooms and regular drying of clothes and blankets can effectively prevent the multiplication of measles virus. People with low immunity can enhance their physical fitness and reduce the likelihood of measles infection through late exercise and dietary therapy. Symptoms of measles infection often manifest as cough, runny nose, fever, red eye symptoms, and progressive aggravation of the disease rash will spread to the whole body from top to bottom. After the appearance of measles, symptomatic treatment is needed immediately under the guidance of a doctor to avoid serious complications from gradual aggravation.