Abstract: The system enables a subject himself to decide on a proper remedial measure, without obtaining particular instruction directly from a medical professional, by providing an advice corresponding to a decision criteria of a plurality of classifications (3x4=12) stored in the storage unit, based on a plurality of autonomic nerve function age ranks and a plurality of autonomic nerve function age ranks A screening system for fatigue and stress has a storage unit which, during screening for fatigue and stress, stores master data composed of reference values for each age, a decision unit which decides by comparing a measurement data obtained by electrocardiogram and pulse wave measurement of the subject with the reference value, and outputs a result of decision classified into the plurality of classifications, and a computing unit which receives the decision results, and calculates autonomic nerve function age ranks, wherein the decision means has an autonomic nerve decision unit which decides autonomic nerve strengt