Junggar Basin in Xinjiang is an important home to reservoirs of energy and mineral resources such as oil, gas, and coal in China. In this paper, a dataset of 20 boreholes drilled in the coalfield of Wucaiwan area that lies in the eastern margin of Junggar Basin (also referred to as the Dataset) was established based on secondary development and exploitation of existing borehole materials. In other words, the Dataset was established by extracting important information from existing materials of the boreholes such as coordinates and elevation of boreholes, thickness and color of strata discovered, and data from interpretation of logging curves. It consists of Excel database files of 20 boreholes. Each database file is comprised of 10 worksheets, namely Basic information of boreholes, Lithological beds based on logging interpretation, Beds based on geological record histogram, Beds based on comprehensive histogram, Lithological beds of boreholes, Names and codes of strata, Colors of beds, Configuration oflogging curves, Data from logging curves, and Data dictionary. The data in the Dataset can be read using software developed by Xi'an Shiwen Software Co., Ltd. (also referred to as Shiwen software) to plot 3D stereograms of stratigraphic sedimentary. This will help achieve a more intuitive understanding of the spatial distribution and 3D geological structures of sandstone bodies in Wucaiwan area and thus is significant for the research of the sedimentary environment in this area.