Children’s mouth swollen like a sausage mouth may be due to mosquito bites, angioneurotic edema and other factors. 1. Mosquito bites: a child’s mouth swollen like a sausage mouth, may be allergic to mosquito bites venom and limited edema, due to the child’s skin is more delicate, may be more sensitive to mosquito venom, skin redness and swelling and other symptoms. 2. Angioneurotic edema: generally caused by food, environment, smoke and other allergic factors, resulting in angioneurotic edema of the mouth area. Clinical manifestations of red lips, numbness, small blisters, ulceration and other symptoms. Children’s mouth swollen like sausage mouth may also have other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.