The utility model relates to a complete safety protection device for temporarily laying an electric power circuit on ground. The complete safety protection device comprises an electric power circuit protection cover, a support frame and a transient bearing plate, wherein the electric power circuit protection cover is composed of a long strip-shaped upper arc plate and a long strip-shaped lower arc plate; the electric power circuit is arranged in the lower arc plate; the upper arc plate is buckled on the lower arc plate; and the support frame is of a rectangle shape. With the adoption of the technical scheme, when the electric power circuit is temporarily laid, the electric power circuit can be conveniently laid on the ground by adopting the complete device, the complex and laborious work of penetrating the electric power circuit through a pipe is avoided, the electric power circuit can be directly placed in the lower arc plate, the transient bearing plate does not need the pipe penetrating work as to the electric power circuit, and the electric power circuit and the electric power circuit protection cover can be clamped in the transient bearing plate by directly opening the transient bearing plate. The complete safety protection device can be applied repeatedly, the work speed and the security of temporarily laying the electric power circuit by electric utilities are greatly improved, and the operating costs are greatly reduced.