The invention relates to a control protective method for an ultra-high-voltage direct-current engineering direct-current change-over switch with a parallel structure. The control protective method comprises the steps of determining a loop state according to information of two fractures of the direct-current change-over switch; when a switching-off operation of the direct-current change-over switch is executed, controlling a protective system to initially send out an auxiliary fracture switching-off instruction, and then to send out a main fracture switching-off instruction after a separating position state of the auxiliary fracture is received and subjected to preset time delay; if the separating position state of the auxiliary fracture is not received or the separating position state duration cannot satisfy the preset time delay, automatically stopping sequential control; when a switching-on operation of the direct-current change-over switch is executed, controlling the protective system to initially send out a main fracture switching-on instruction, and then to send out an auxiliary fracture switching-on instruction after a closing position state of the main fracture is received and subjected to preset time delay; and if the closing position state of the main fracture is not received or the closing position state duration cannot satisfy the preset time delay, automatically stopping sequential control. The control protective method can be widely applied to control and protection of the ultra-high-voltage direct-current engineering direct-current change-over switch.