Oral health is an important part of human health. The World Health Organization has pointed out that dental health means that teeth, periodontal tissues, adjacent parts of the oral cavity and jaws and face are free of tissue structure and function abnormalities. And the oral health standards are: clean teeth, no cavities, no pain, normal gum color and no bleeding. From this we can see that oral health means having good oral hygiene, sound oral function and no oral disease. The World Health Organization has put forward the goal of health care for all by the year 2000. To protect teeth, we must start from preventing dental diseases, developing good oral hygiene habits, regular checkups, and treating dental diseases, timely restoration of missing teeth, and regular dental cleaning in order to maintain sound dental functions. All handsome men and women, when you do not open your mouth, the instrument outstanding you may be the focus of attention, but when you open your mouth, may immediately destroy others to your aspirations, why? Because of the bad breath ah! This is really bad scenery. For men and women in love, bad breath may lay the fuse for the breakup of their relationship, and how wrong it is! Therefore, it is very important to learn to take care of dental health and find out the real cause of bad breath. Generally speaking, the cause of bad breath lies in oral hygiene, but some people have good teeth and brush their teeth every morning and night, but they just can’t get rid of bad breath. The reasons for this include: excessive smoking, constipation, improper diet, poor liver function, rotten teeth, etc., are all causes of bad breath. From the point of view of nutrition experts, you can improve bad breath in a relatively easy way: 1, “green drinks” is the best way to fight bad breath, and can use chlorophyll as a mouthwash, which helps breath smell good. This green drink can use wheat grass, and barley grass juice as the main ingredients, a glass of chlorophyll juice every day (a glass of water, two tablespoons of chlorophyll juice), the effect is good. 2.Eat 250 mg of vitamin C every day. eating vitamin C can help restore healthy gums and prevent gum bleeding, and eliminate excessive mucosal secretions and waste in the mouth (these substances are one of the factors that cause bad breath). 3, after eating, brush your teeth and tongue, and also use dental floss to remove the meat and vegetable scraps from your teeth and remove the dirt between your teeth. In addition, it is best to get a new toothbrush every month to prevent the accumulation of bacteria on the toothbrush. 4, eat more vegetables to solve the problem of constipation. If the above methods still can not solve the problem of bad breath, then your body may be sending some kind of signal of health problems, then it is not just bad breath, but the need to go to the hospital to do a good examination. Discover the health symptoms, and then the right medicine, you can be relieved of the suffering of bad breath as soon as possible.