If it is an oral ulcer, watermelon frost spray can be used, and watermelon frost spray has a nozzle. Just aim at the wound, press watermelon frost and spray it on the wound. 3-6 times a day, 0 each time. 1-0。 3 grams, sprayed on the affected area.

Watermelon frost spray has the functions of clearing away heat and toxic materials, reducing swelling and relieving pain. Watermelon frost spray is used to treat moth, laryngitis and chyme caused by wind-heat attack and lung-stomach heat, with symptoms such as throat tumor, swollen laryngeal nucleus, sore mouth and tongue, swollen gums or bleeding. It is an essential medicine for oral health care.

Pay attention to drink plenty of water, rest more, have a light diet and a balanced nutrition.

Blisters may also be herpes virus infection, oral ulcers and hand, foot and mouth disease. If the child has fever symptoms, it is mostly herpes virus infection or hand, foot and mouth disease. If accompanied by red spots on hands and feet, most of them are hands, feet and mouth. If it is herpes virus infection and hand, foot and mouth disease, you can take orally drugs that clear away heat and reduce fire, such as Kouyanning, combined with antiviral drugs and anti-infection treatment. It is recommended to go to a regular stomatological hospital or a children's hospital for treatment.