Children’s face swelling for no reason, considering the physiological or pathological factors, physiological factors such as sleeping position is not right, resulting in postural edema; pathological factors such as gingivitis, mumps or facial allergies, etc., can lead to children’s facial edema. 1. Postural edema: when children sleep with their faces facing down, their faces will be compressed for a long time, and facial edema may occur. Generally speaking, this kind of physiological postural edema will not be too serious, and after a period of time will be improved by itself. 2. Pathological factors: there are a variety of diseases can be due to the child’s facial edema, such as children may appear gingivitis, due to gum swelling caused by facial edema; mumps, can also be due to inflammation and swelling of the parotid gland, resulting in facial edema; children’s facial allergies, facial edema can also occur; in addition, nephrotic syndrome, there will be the case of facial edema. Children’s face swelling for no reason, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.