Persistent fever in young children may be caused by viral infection. Parents should ensure their child drinks plenty of water, cooperate with physical cooling methods, such as using fever-reducing patches and wiping specific body areas, to achieve cooling effects. If the fever recurs, it may be due to an uncontrolled infection, and a change in medication treatment, such as switching to Chaihuang Granules and Qingkailing Granules, may be necessary.