Hand, foot and mouth disease is caused by viral infection, if not accompanied by fever and other systemic symptoms, indicating that the disease is relatively mild, you can not use drug treatment, try to drink more warm water, eat more fruits and vegetables, pay attention to rest, generally about 5-7 days can be self-healing. However, because HFMD is highly contagious, and there are many types of viruses that cause HFMD, and it often occurs in children under 5 years old, it is easy to have central nervous system involvement when the disease is serious, which can cause encephalitis, myelitis, meningitis, encephalomyelitis and pulmonary edema and other complications, and in severe cases, it can lead to circulatory failure, etc. Therefore, even if there are no fever symptoms, we do not advocate leaving it alone, and we must closely observe the child’s Therefore, even if the child does not have fever, it is not advisable to leave the child alone. If your child develops high fever, poor mental health, lethargy, frequent panic attacks and shaking of the limbs, you should seek medical attention immediately. In addition to closely observing your child’s condition, you should also pay attention to indoor air circulation, dry your child’s clothes and quilts, disinfect your child’s bottles and other supplies, and keep your child’s mouth and skin clean.