自从康德的道德哲学产生以来,人们就一直对其动机学说质说纷纭,发展到现在,甚至有人质疑实践理性概念的合理性。综合考虑康德的道德学说,我们会发现,从意志概念入手,康德论证了意志概念作为一种欲求能力把规定根据置于主体的理性中时,意志作为自身的根据表现为一种实践理性。作为实践理性的意志在成为自身的决定根据时,理性法则作为一种准则的法则通过影响人性倾向而成为意志的决定根据,从而成为意志行动的动机。 Since the emergence of Kant’s moral philosophy, people have always expressed different opinions on his motivation theory. Some people even question the rationality of practical rationality until now. Taking Kant’s moral theory into consideration, we will find that starting from the concept of volition, Kant demonstrates that the concept of volition acts as a kind of practical rationality as a basis of one’s own will when the concept of volition is placed as a desire ability in the rationality of the subject. As the will of practical reason becomes the basis of its own decision, the law of rational law as a guideline becomes the decisive basis of the will by influencing the tendency of human nature and thus becomes the motive of the action of the will.