An analytical solution is developed for sliding-toppling complex failure of rock slope

based on the corresponding failure mechanisms and the transfer coefficient method for entire block toppling failure. Moreover

the influences of initial sliding force from unstable set of rock slope and the cohesive force of block base are also analyzed. In order to have uniform expressions

the variables are expressed by the geomechanical parameters of the slope and the serial number of the block in this proposed method. Consequently

the stability of sliding-toppling complex failure of rock slope can be easily analyzed using a Microsoft Excel spreadsheet. This proposed method is applied to a practical rock slope. The results show that the cohesion of block base has significant influence on the failure model of susceptible toppling block

with increasing of the cohesion

the area of block toppling failure increases and the area of sliding failure obviously decreases. It is good agreement with previous research of block toppling failure that the relative angle of block base have significant influence on the entire stability of the complex rock slope; and the safety factor of the rock slope decreases with increasing of the relative angle of block base.