Siping Hydropower Project Dam in Baokang County，Hubei Province is a face rockfill dam，where a large amount of riverbed sand and gravel are used as the main filling material.The available engineering experience for reference was in a large shortage at that time.In order to make full use of natural sand and gravel material and part of shale material and ensure the safety of the dam body，a systematic research was made on the key technologies such as the permeability characteristics of filling material， the selection of transition material， the utilization of soft rock material，the optimization of the dam body section，and the reinforcement of the deep sand and gravel overburden by dynamic compaction.These studies had achieved a lot of new insights.The successful construction of Siping dam embodies the advanced design concept and technology of sand and gravel filled concrete face dam.The settlement of the dam is very small since its operation.This paper briefly introduces the development process of sand-gravel filled concrete face dam and the key technologies of siping dam for reference of the possibly incoming similar projects in the future.