In article methodological features of a research the idea and the conception as object of studying of Chrono-Discrete Mono- Geography Comparative Jurisprudence (CMCJ) are analyzed. The concepts «idea» and «conception» are differentiated; the signs of the concept important when carrying out the CMCJ-research are distinguished. Such signs of the concept as systemacity, authorship, reflexivity and sotsiologichnost are distinguished. Conclusions about the nature of a temporary gap in development of the ideas and concepts are drawn; methodological approaches to a temporary gap are defined. In relation to a temporary gap in existing of conceptions two types of a temporary gap are allocated and analyzed. The first - temporary gap as a result of the institutional embodiment of the conception. In this case the concept arises and develops, having the ultimate goal creation of a certain institute. In this case the conception often has ideal character as idea of model of the relevant institute is embodied in it. Temporary gap in this case will be creation of such institute, the embodiment of the conception in life, implementation of the conception which at once loses after that the relevance, at least, in that look in what it existed before realization. Liquidation of institute, the termination of its existence which involves reproduction of the conception in new historical conditions becomes the termination of a temporary gap. The second - temporary gap in development of the conception as a result of the direct legal ban. In this case, the conception arises and develops until, yet will not happen, either prohibition of the conception, or institute with which this conception is directly connected. Reproduction of the conception, and, therefore, and the termination of a temporary gap, is caused by removal of such ban.