The invention provides electricity transmission cable bending equipment with protection sleeves and a bending method thereof. The bending equipment is used for bending the head portions of a cable (1) to be formed, so that the cable (1) is firmly connected with electrical equipment in a shape-matched mode, the bending equipment comprises a rack (9) and a left sliding forming mold and a right sliding forming mold arrayed on the left and right, the outer surfaces of the left sliding forming mold and the right sliding forming mold are provided with the protection sleeves (301), the protection sleeves (301) are made of sponge materials, the middle positions of the upper side edge and the lower side edge of the rack (9) are provided with an upper guide roller pair (8) and a lower guide roller pair (7) respectively, and the spacing distance between two rollers of the upper guide roller pair (8) is in mutual alignment with the spacing distance between two rollers of the lower guide roller pair (7) to allow the cable (1) to penetrate through.