To  answer the question about manner of "ascribing  the morality law to nature law in Kant's opinion", after explaining the moot point's past,  this article shows that many philosophers before and after Kant, have not permitted the violation of morality law from nature law.  Then it is shown that following this approach, Kant is also wishful to ascribe morality law to nature law. In order to do this, Kant has studied the manner of nature's formation in pure wisdom, firstly and seeks it from sensible phenomena to pure wisdom's ideas. In the following, he studies the manner of moral phenomena from the reasonable form of free will to construct a moral world. In his opinion, these two dependant paths, have been profited from unifying rules of wisdom's ideas and regnant rules of understanding formats. So, in this way, these two dependant ways, can't disobey the existing discipline and unity in the world and the regnant rules.