The invention provides a stepped type retaining wall building block die. The stepped type retaining wall building block die comprises a base, and a middle die, a first moving die, a second moving die, a first fixed die and a second fixed die, which are mounted on the base, wherein the first moving die, the first fixed die, the second moving die and the second fixed die are sequentially distributed at the periphery of the middle die; the first moving die and the second moving die are symmetrically arranged along the middle die; the first fixed die and the second fixed die are symmetrically arranged along the middle die; when the middle die, the first moving die, the second moving die, the first fixed die and the second fixed die are in a die assembly state, two cavities which are symmetrically arranged along the middle die are formed through the mutual cooperation of the middle die, the first moving die, the second moving die, the first fixed die and the second fixed die; and two pouring gates communicating with the two cavities are separately formed in the top end of the die. The stepped type retaining wall building block die can simultaneously produce two retaining wall building blocks. The structure is simple. The die can be continuously closed and opened, and the retaining wall building blocks can conveniently and reliably taken out, so that the production efficiency is greatly increased.