Abstract: The height of face slab rock fill dam at Siping hydropower station is 90.5 m, which is the highest sandy gravel face slab rock fill damin construction in China. According to construction requirements, the two months and a half long construction stage was all in winter, when bad environment and great influence by weather. With support from Siping company and the effort by experts from all departments, the construction of face slab was finished smoothly. In construction, the application of trackless sliding fromwork was advanced and the experience was worthy reference.