The classiology is the science about classification - is offered to divide in: 1) introduction (the base principles of the classiology system), 2) preliminary propositions (prolegomena), 3) classiology (s.s.) - general questions, general, branch, concrete classiology. In each of three last, in turn, general questions, classification science (the section about classifications), systematics (the section about procedures of construction of classifications), diagnostics (the section about procedures of the attributing of object to one of the classes of the classification) and synclassiology (the section, considering three mentioned of the sections upon the whole) are divided.