For a minor cold accompanied by persistent high fever, firstly, it is essential to monitor body temperature. If the fever continues, the initial step should be to reduce the fever, which can be done by taking ibuprofen or acetaminophen orally every 4 to 6 hours as required. Additionally, physical cooling methods such as tepid sponge baths, warm baths, and drinking warm water can also be used. If the fever persists or recurs, it's crucial to visit a hospital for routine blood tests and C-reactive protein assessments to evaluate the condition and determine whether it is caused by a bacterial or viral infection. If a bacterial infection is suspected, sensitive antibiotics should be used to treat the infection. If a viral infection is considered to be the cause of the ongoing fever, treatment should primarily focus on fever reduction. Attention should also be paid to mental responses and changes in body temperature.