The embodiment of the invention discloses an emotion judging method and an emotion judging device, wherein the method includes steps of acquiring an electrocardiosignal of a tested objet, and calculating a time domain index according to a time interval of adjacent R waves of the electrocardiosignal, and using the time domain as a first reference index; collecting a skin electrical signal of the tested object, and calculating and acquiring a second reference index according to the peak number, peak height and maximum peak amplitude of the skin electrical signal; according to the change tendency of the first reference index and the second reference index, judging the emotion state of the tested object. Firstly, the invention provides a high-efficient and low-cost emotion judging way; secondly, the method and device can simply, effectively and exactly judge the emotion of the human body, and improve the user experience.