Narrow transmission corridor and limited power consumption ability of a single market have become the key problems to power transmission and consumption of large energy bases in China. UHV multi-terminal DC (UHV-MTDC) technology can meet the requirements of long distance and large capacity power transmission for multiple sending ends and receiving ends. UHV-MTDC can save transmission corridor and match the multiple sending ends and receiving ends flexibly, therefore it will help to solve the power transmission and consumption problems of large energy bases. UHV-MTDC is an important direction of DC technology development in the future. Combining with the design of the demonstration project of UHV-MTDC transmission system from Wudongde hydro plant to Guangdong and Guangxi province, the advantages and utilization situation of UHV-MTDC technologies are introduced and their applications in the future are analyzed.