If the patient is currently experiencing a tightening sensation in the heart, it is recommended that the patient first take heart pills or compound salvia drops under the tongue. Since this constriction is highly likely to be caused by angina pectoris, taking these medications can help improve the current discomfort. In addition, it is advisable to measure the heart rate and blood pressure of the patient. At this time, drugs such as aspirin and metoprolol can be taken, but only if the blood pressure is low, it is not suitable to take drugs such as metoprolol or bisoprolol. Patients are also advised to remain lying down, which also helps to improve the tightness, and if there is oxygen equipment at home, oxygen can be administered. If the symptoms do not improve after the above medications, you should call 120 and go to the hospital for examination and treatment.