The invention discloses a dual-protection operation switch preventing power-on self-starting. The dual-protection operation switch comprises a first protection circuit and a second protection circuit. The second protection circuit comprises a change-over switch and a relay. The change-over switch comprises a circular turn button, a stop position normally-closed point, a ready position normally-open point and a start position normally-open point. The stop position normally-closed point, the ready position normally-open point and a relay coil are successively connected in series. A normally-open point of the relay is serially connected with the start position normally-open point, and the other normally-open point of the relay is parallelly connected with a ready position static contact point arranged between the stop position normally-closed point and the ready position normally-open point. When an electric device is started, the change-over switch must be firstly switched to a ready position and then switched to a start position, and the electric device can be started. In this way, the electric device is prevented against restarting when the power is off and is on again under any conditions, the device is effectively prevented from being damaged, and even personnel damages can be avoided.