The invention discloses a fabricated rubble slope surface protection structure and a construction method. The protection structure comprises a slope soil body, wherein an assembly type masonry framework is fixed to the slope surface of the slope soil body, the masonry framework is engaged and fixed through an assembly structure from the slope surface to the slope toe, mortar rubble is laid in the masonry framework, a slope toe embedded structural member is arranged at the slope toe of the slope soil body, and the bottom of the masonry framework is supported by the slope toe embedded structural member. The construction method comprises the following steps of cleaning the side slope; arranging a bottom layer structure; hoisting the fabricated masonry framework; implanting an anchor rod; laying the fabricated masonry framework; constructing a water stop seam; and controlling the slope deformation. According to the fabricated rubble slope surface protection structure and the construction method, raw stones are effectively used for reinforcing the slope surface, compared with a pure lattice slope protection method, the gravity back pressure effect is achieved, the raw stones can be preferably used, and waste residues generated during field excavation are reduced. Compared with an integral slope protection structure, the fabricated slope protection construction is adopted; and compared with the mortar rubble, the construction can be accelerated, and the construction period is guaranteed.