The invention provides a combined type rotary ground anchor device, and a setting and electric power construction application method for anchoring temporary circuits in power transmission circuit engineering construction and belongs to the field of power transmission circuit engineering construction. The objective of the invention is to solve the problem of traditional tedious construction of ground anchors and high land occupation compensation. The device comprises a ground anchor body, a ground anchor rotation rod, a rotation sheet, a horizontal rod, a horizontal rod support rod, a suspension point hanging ring, and a rotation rod rotation fork hole. The ground anchor body comprises a first body which is penetrated by the ground anchor rotation rod and fastens the ground anchor rotationrod therein, and a second body which is fixed to the first body in an integrated manner.