Chest tightness and fever are considered to be caused by heart disease, possibly related to myocarditis and insufficient blood supply to the heart muscle. It is recommended to go to the hospital for electrocardiogram and cardiac ultrasound examination to clarify the cause. If the chest tightness and fever are caused by myocarditis, it is recommended to take Salvia tablets for treatment. Usually pay attention to your own emotional regulation and avoid excessive emotional tension and excitement. Any symptoms of heart discomfort should be promptly treated at the hospital. Daily diet is recommended to choose foods with high protein and vitamins to help the body replenish nutrition and enhance resistance, which is beneficial to help the heart function to recover. Try to go to places with dense crowds and poor air circulation, and try to choose activities within the environment with better outdoor air, and you can choose mild aerobic exercises.