Cardiogenic changes in cerebral blood flow spectrum means that cardiac causes have caused changes in cerebral blood flow. The blood flow in the brain is very rich, and the blood flow spectrum of the brain can reflect the pumping function of the heart. There are many reasons that can cause changes in the spectrum of cerebral blood flow, and cardiac factors and cerebrovascular atherosclerosis are common causes. Cardiogenic changes in cerebral blood flow spectrum are mostly caused by arrhythmia and cardiac arrhythmia. Abnormalities in the heart’s beat frequency and rate can lead to abnormal pumping and perfusion of blood. When patients are suspected of having cardiogenic cerebral blood flow spectrum changes, they should have heart-related examinations such as electrocardiogram and cardiac ultrasound as soon as possible to clarify the specific cause of the disease and carry out targeted treatment.