A bottle, or infusion, is used to treat the infection. Upper respiratory tract infections are usually treated without fluids. If the fever persists and is accompanied by dehydration, intravenous antibiotics are needed to replace fluids while fighting the infection. 1. General infection: Upper respiratory tract infections are often caused by viral infections, manifested by coughing, nasal discharge and nasal congestion, and are mostly self-limiting. Antibiotics are generally not needed, and symptomatic treatment is the mainstay. Oral cold medications such as acetaminophen can be used when symptoms are severe, and physical cooling or antipyretics such as acetaminophen can be used for fever. In this case, there is usually no significant fluid loss, so there is no need for rehydration. 2. Severe infections: In severe cases of upper respiratory tract infections, suppurative inflammation may occur, and the patient usually has a high fever for a long period of time, and may even become dehydrated and have electrolyte disorders. Antibiotics are needed to control the symptoms and prevent the infection from spreading further. Therefore, patients need to be treated with fluids to maintain water-salt-electrolyte balance along with the infusion of antibiotics. In summary, when acute upper respiratory tract infection occurs, it is necessary to pay attention to a light diet, adequate rest, avoid staying up all night, and can take some cold medicines appropriately, which usually does not require infusion treatment. If the symptoms progressively aggravate and appear persistent high fever, it is necessary to consult a doctor as soon as possible to clarify the cause of the disease, and timely treatment.