The invention provides a special injection valve for a full-automatic ferrite slurry injection mold. The special injection valve comprises a valve body. The valve body is provided with a feed port, a channel and a discharge port which communicate with one another; a valve element is arranged in the channel of the valve body, and the valve element partially extends out relative to the valve body; the end, extending into the channel, of the valve element is provided with a V-shaped fabric rubber seal ring; the V-shaped fabric rubber seal ring is matched with the valve element to seal the channel; the end, extending out of the channel, of the valve element is connected with a telescopic rod of an air cylinder or a telescopic rod of a hydraulic cylinder to drive the valve element to be matched with the V-shaped fabric rubber seal ring to control opening or closing of the channel; an O-shaped seal ring is arranged at the surface, intersecting with the V-shaped fabric rubber seal ring, of the channel of the valve body; a Y-shaped seal ring is arranged at the surface, intersecting with the valve element, of the channel. The special injection valve for the full-automatic ferrite slurry injection mold is low in manufacturing cost, convenient to maintain, capable of preventing outleakage and free of material leakage; the valve element is not prone to abrasion and long in service life; meanwhile no material spraying happens during demolding.