Temperature self-controlled fan blade

The invention discloses a temperature self-controlled fan blade which is formed by bonding an inner layer and an outer layer together, wherein the inner layer is a high-polymer PTC (Phenylthiocarbamide) material layer, the outer layer is an insulating layer, a power-supply lead is buried in the inner layer, and the high-polymer PTC material layer is prepared by mixing the following components in mass percentage: 40-96 percent of polymer, 3-50 percent of conductive filler, 0-40 percent of processing aid and 0-50 percent of non-conductive filler. When the temperature self-controlled fan blade is not electrified, the fan blade can be used as an ordinary fan, and when the blade is electrified, hot wind is blown out and can be used for heating in winter, thereby the utilization ratio of the fan is improved.