Insufficient blood supply to the heart and brain is considered to be a combination of insufficient blood supply to the heart and insufficient blood supply to the brain. Chest tightness and shortness of breath may be caused by coronary atherosclerosis, heart disease combined with insufficient blood supply to the brain. It can be treated by lifestyle modification, medication or surgery. 1. Coronary artery atherosclerosis: it may lead to the decrease of heart ejection function, induce the insufficiency of blood supply to the heart combined with the insufficiency of blood supply to the brain, and the symptom of chest tightness and shortness of breath appears. To eat less fried, barbecue and other greasy food, eat more vegetables and fruits. You can also use isosorbide mononitrate tablets and other drugs to improve the blood supply of the heart, and if necessary, you can also perform percutaneous coronary intervention. 2. Heart disease combined with insufficient cerebral blood supply: when heart disease combined with cerebral arteriosclerosis, cerebral infarction and other diseases that lead to insufficient cerebral blood supply, there may be symptoms of chest tightness and shortness of breath. The blood supply to the heart can be improved with drugs such as isosorbide mononitrate tablets, the blood supply to the brain can be improved with drugs such as flunarizine, and surgery such as stent implantation can be performed if necessary. Heart insufficiency combined with insufficient blood supply to the brain, the symptoms of chest tightness and shortness of breath may also be heart disease combined with cervical spondylosis and other diseases caused by the need for further examination of brain CT, cervical spine CT and other items to find the cause of the cause of treatment under the guidance of a doctor, avoid self-medication. Avoid self-medication. If you feel unwell, consult a doctor in time and follow the doctor’s instructions.