In the hot summer, everyone likes to drink some herbal tea to avoid getting fire and developing mouth ulcers. So, can drinking herbal tea in summer prevent mouth ulcers? In fact, herbal tea also contains many Chinese herbs, with the four gases and five flavors of traditional Chinese medicine, these raw materials herbs mostly have the effect of clearing heat and benefitting Qi, nourishing Yin and submerging Yang, for example, the herbs used by everyone such as honeysuckle, rose, bitter tea, chrysanthemum, pelargonium, wood butterfly, maitong, etc., the taste is mostly pungent, sweet and cold, after soaking, more than half of the active ingredients will be dissolved into the water, although the medicinal power is not as strong as the decoction over the soup. But if you drink a lot of it, it can also dissipate the body’s Yang energy and affect the function of the spleen and stomach while clearing the summer heat. Therefore, we should understand that herbal tea is also a medicine that can be used to relieve the summer heat at the right time, but it should not be quoted as a daily drink, especially for people with a deficient Yang constitution, people with a bitter summer and women during menstruation and puerperium are not suitable for drinking herbal tea. Herb tea as a beverage with heat relief, can partially prevent oral diseases such as mouth ulcers, mouth sores, tongue pain caused by “heat toxicity” in the body, but can never represent the treatment of oral diseases, even if the oral diseases caused by “fire”. But “fire” has the difference between real and false, real fire can be used to detoxify tablets, clear fire gardenia maitong tablets, etc., false fire is not only can not drink herbal tea, should be used Zhi Bai Di Huang Wan, Liu Wei Di Huang Wan, etc. nourishing Yin to reduce fire, and even need careful clinical evidence-based treatment, in order to achieve good results.