Abstract: At present, there are some problems in the design of coal gangue dump treatment, such as the low efficiency of mapping and design, and the unclear description of fire-fighting and reburning prevention technology. In view of this situation, this paper uses UAV technology to fly a coal gangue hill treatment area, obtains three-dimensional terrain data, imports it into BIM software for forward design, and makes the construction animation of coal gangue hill fire-fighting and reburning prevention technology to guide the construction. The results show that: the three-dimensional terrain obtained by UAV aerial survey technology can be directly applied to BIM design, instead of CAD topographic map, the mapping efficiency is increased by about 60%; the forward collaborative design using BIM software makes the engineering calculation more accurate, and the design efficiency is improved by about 30%; the animation of fire fighting and re ignition technology made according to BIM model plays an important guiding role in the field construction.