Children coughing with phlegm after fever, you can open the humidifier, so that the child inhaled gas humidification, can relieve the symptoms. Indoor open humidifier can moisten the air, so that the inhaled gas humidification, help to maintain the function of the respiratory mucosa, enhance the ability of cilia activity, dilute phlegm for discharge, improve cough and phlegm symptoms, the conditions are best to use a nebulizer, or oxygen-driven nebulizer, the effect is better. Children coughing with phlegm after a fever, simply open the humidifier can not treat the disease, need to take the child to the hospital as soon as possible, according to the cause of the condition of the guidance of drug treatment. Children with fever and cough with phlegm, indoor can open the humidifier to assist in the treatment, but still need to go to the hospital, according to the condition of the drug treatment.