Altogether 105 rock samples are collected from the Maowa section, the bottom part of the Wayao Member of Falang Formation of Late Triassic in Guanling County, Guizhou Province, and contents of 36 elements of the rock samples are measured by ICP (Inductively Coupled Plasma Emission Spectroscopy). Based on the measured data, the authors analyze the enrichment factors (EF), R type cluster analysis and R type factors of the elements, and chronological changes of the ratio of elements to Al2O3, the ratio of oxides to Al2O3 and the value of δCe, then discuss the factors controlling the changes of element contents, and present an interpretation about the sedimentary provenance, paleoredox condition and burial environment of Guanling Fauna. As a conclusion, the sediments within the studied interval in 5.2 ~17.7 m in the Maowa section are mainly composed of terrigenous and biogenic substances, which are deriving from continent crust rather than volcanic material or thermal water. During this course, paleo-oceanic redox conditions changed repeatedly. The changes of element contents are controlled by terrigenous material, redox conditions, biogenic material and diagenesis. The 5.2 ~17.7 m interval of the section can be divided into four beds in terms of elementary stratigraphy. The ratio of elements and oxides to Al2O3 changes frequently from the first bed (bottom part of the interval) to the fourth bed (top part of the interval), showing a periodicity from slight to strong fluctuation. By correlating the paleoredox conditions with the occurrences of fossils, the authors suggest the formation and preservation of the crinoids and marine reptiles fossils benefit from anoxic conditions.