Gingivitis is mainly an inflammatory reaction of the gum tissue, generally manifested as bleeding gums, redness, swelling, pain and other conditions, gingivitis is divided into a variety of situations, the following brief introduction to common gingivitis: 1, chronic gingivitis: the most common gum problems, the common cause of dental calculus, food debris accumulation and other conditions, resulting in the accumulation of plaque, and cause chronic gum irritation to form chronic gingivitis. 2, adolescent gingivitis: both men and women may develop, this period of the population is often due to dental cleaning is not timely and lead to the onset of gingivitis symptoms aggravated by the secretion of growth hormones. 3, gingivitis during pregnancy: is also due to the body’s hormone secretion problems, and caused by the chronic inflammation around the gums aggravated, generally in the delivery can be self-reduced or disappear. 4, necrotizing ulcerative gingivitis: the main reason for the onset of the oral cavity with a large number of spirochete bacteria and bacillus infection, generally this situation is due to reduced resistance or malnutrition and overexertion and other factors, the general onset of the disease is relatively urgent, there will be gum redness, swelling, bleeding and gum ulceration, in the gum erosion and a layer of white film cover, need to promptly seek medical treatment to avoid causing high fever and so on. It is important to seek prompt medical attention to avoid high fever and other conditions. Gingivitis can also be avoided in daily life, do not eat spicy and stimulating food that is easy to get on fire, and pay attention to the best time to brush your teeth for more than 3 minutes to avoid unclean teeth, can be scaled once every six months or once a year to keep your teeth clean and avoid the appearance of dental calculus.