The invention provides a system for detecting the risk of alzheimer's diseases. The system comprises a detection device, a computing device, and an identifying device, wherein the detection device is used for detecting magnetic decrement signals generated by two alzheimer's disease biomarkers in individual biological specimens, wherein the two alzheimer's disease biomarkers are tau protein and Abeta-42 protein; the computing device is used for converting the magnetic decrement signals of the two alzheimer's disease biomarkers into the concentrations of the two alzheimer's disease biomarkers; and the identifying device is used for detecting the risk of the alzheimer's diseases according to the product of the values of concentrations of the two alzheimer's disease biomarkers.
System for detecting risk of alzheimer's disease