The invention provides an automatic-demolding antimony casting conveyor. The automatic-demolding antimony casting conveyor comprises an auxiliary demolding device arranged on the outer side of a transmission wheel of a casting antimony conveyor; and when an antimony casting ingot is transported to the right side of the axis of a transmission wheel in the longitudinal direction, the auxiliary demolding device is used for striking the antimony casting ingot, so that the antimony casting ingot naturally falls off under the action of gravity when being transported to the lower side of the axis ofthe transmission wheel. According to the automatic-demolding antimony casting conveyor, the labor intensity is effectively reduced, and the production efficiency and the economic benefit of enterprises are improved.