Abstract: A new technology of fast waste disposal to protect slope and restore ecology at open pit mines,their ore beds are divided into sections to mining, are introduced in this paper. It suits the pits, in their exhausted areas the waste can be disposed. Divide the ore bed into small and safe sections that all mining equipments can work easily and economically. All working processes, such as overburden removal, mining, waste disposal to protect slope, land restoration and clothe with greenery, are carried out sequentially in one section. This technology has the advantages of a short waste disposal distance, a short final slope existent time of each section to steep its ultimate pit slope angle, taking waste disposal as the main method to protect slope, a faster ultimate protect of each section slope with a low cost, changing the rock disturbance-destruction of a wide scope to a small section after section , and restoring ecology faster.