Patients with upper respiratory tract infections should pay attention to their diet by preferring light meals, drinking more water, consuming more juices such as fruit and vegetable juices to supplement vitamins, or eating fresh fruits and vegetables rich in vitamin C to enhance their immunity and promote cellular repair, which can facilitate recovery from the infection. Additionally, they should avoid spicy, greasy, cold, and irritating foods. Treatment should also involve taking anti-inflammatory and anti-infection medications, as well as cold remedies under the guidance of a doctor. It is also advised to frequently ventilate rooms to maintain fresh and circulating indoor air, ensure the environment is not too dry, and that temperature and humidity are appropriate. Moreover, one should avoid staying up late and ensure sufficient sleep to boost their immune system. (Note: This answer is for reference only. Medications should be administered under the guidance of a professional physician, and self-medication should be avoided.)