Preventive measures for allergic rhinitis in children: 1. Give children a clean living environment, often with moisture and dust, open windows and ventilation to keep the air fresh; 2. Allergens, such as home decoration, do not let the baby close to cats, dogs, crows and other pets, in the season of pollen, do not take children to places where flowers and trees are abundant. Preventive measures for allergic rhinitis in pregnant women: 1, try to avoid allergens; 2, light, less spicy and stimulating diet, eat more vegetables and fruits; 3, keep a good attitude, not anxious, not dry, change bad habits, do not overwork; 4, moderate activities, less or no disease, improve the quality of life; 5, can be appropriate amount of salt water to wash the nose.