To give different treatment methods according to different causes, the following common conditions: First, vitamin and trace element deficiency caused by. We should pay attention to the reasonable addition of complementary foods, not picky, not partial food, balanced nutrition. If necessary, you can take your baby to the hospital for trace element testing, according to the test results to give trace element supplementation. Second, stomatitis. In addition to blistered lips, mostly accompanied by fever, herpes in the mouth, most of them are viral infections, can be applied locally rehabilitation new liquid and oral pediatric antiviral particles. Third, eczema. Most in the corners of the mouth and lips around the red rash, occasionally blistering phenomenon, can be applied locally to children’s eczema cream.