The Sloped Solar Updraft Power technology is a promising solution to improve the solar updraft tower plant performance and has attracted the attention of many researchers since firstly proposed by [2] in 2005. A comprehensive overall review for the SSUPP components, principle and the theoretical and experimental studies up to date are summarized. More investigations to optimize the SSUPP dimensional parameters, especially by using finite element technology, are recommended and accurate economical studies should be performed also to compare between the conventional SUPPs and the SSUPPs.