The invention discloses an electric transmission line tower foundation protection slope. The electric transmission line tower foundation protection slope comprises an annular parapet wall which is formed by connecting a plurality of connection bodies together, a punching hole corresponding in position is formed in the middle portion of each connection body, a connecting rod is arranged in each punching hole, and the two ends of the connecting rods are fastened through nuts; a pair of grooves are formed in one side of the upper end face of each connection body, embedded bolts are arranged in the grooves, outwards-protruding connection pieces are arranged at the other upper end faces of the connection bodies, and the positions of the connection pieces correspond to the positions of the grooves; and installation holes matched with the embedded bolts are formed in the connection pieces. According to the electric transmission line tower foundation protection slope, the large-scale poured concrete connection bodies are adopted, connection is achieved rapidly through hoisting, and time and labor are saved; and in addition, the connecting effect is good, and the slope protection capacity is high.