Small blisters around the child’s mouth can be caused by a variety of conditions, such as common viral infections and vitamin deficiencies. At this time parents need to take their children to a professional hospital, clear the cause of the disease for targeted treatment. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. The blisters do not fuse with each other, or multiple clusters of blisters may appear at the same time. At this time can be under the guidance of the doctor, the application of methyl violet solution and other drugs for treatment; 2, vitamin deficiency: If the child’s diet is poor, long-term, large intake of fried food or meat, little or no intake of fruits and vegetables containing vitamins and dietary fiber, in the body vitamin deficiency, the child can appear the situation of small blisters around the mouth. At this time, the child’s diet should be corrected to promote recovery; 3, other: if the child is under long-term nervous stress, staying up late, etc., there may be a fire situation, there may also be small blisters around the mouth. Bad emotions and regular work and rest should be changed to relieve the bad situation. Impetigo and allergic diseases caused by bacterial infections can also appear blisters.