To provide a greening structure of a slope capable of being smoothly and surely greened even if the slope is easy to collapse.

The greening structure of the slope is so constituted that foundation base concretes 1 formed of excelsior tips hardened with cement are laid over the whole surface of the slope A to be greened, and since a plurality of borrow filling vegetative base concretes 2 formed by hardening the excelsior tips with cement and penetrately providing borrow filling holes 22 filled with the borrow passing through between up and down surfaces are set and fixed on the foundation base concretes 1, the slope A is reinforced by laying the foundation base concretes 1 on the whole slope A to be easily collapsed to prevent the collapse of the slope A, and the greening of the slope A can be surely executed.