The beginning of the Upper Paleolithic in Siberia, at least, dates back to about 47,000 years ago. While there are debates about how the Initial Upper Paleolithic emerged and which human species it should be associated with, many material culture elements that point to "symbolic behavior" were found from the cultural layers where blade-based stone industries were exposed from the beginning of that phase. From the beginning of the Initial Upper Paleolithic in Siberia, the occurrence of many elements defined under the concepts of "modern behavior" (or "behavioral modernity"), and a subset of it, "symbolic behavior", which are associated with the spread of anatomically modern humans to Eurasia, can be seen as an important support for the attribution of the new culture to modern human populations. In this article, I tried to examine the hypotheses and problems about the beginning of the Upper Paleolithic in Siberia; findings and prominent examples indicating the "symbolic behavior" seen during the Upper Paleolithic as categorized them under the headings of the evidences that related burial and belief system and the findings including ornaments and jewelry, portable art objects, two-dimensional depictions on osseous plates, rock and cave arts.