The invention provides a barium titanate-based positive temperature coefficient material for preventing icing and a preparation method thereof. The preparation method of the barium titanate-based positive temperature coefficient material comprises the following steps that barium titanate is selected as a substrate, by adding Sn, Sr and other Curie point moving agents, the Curie point of the material is moved to 0 DEG C, then Y, Ce and other elements are mixed as electron donors, and Mn element is mixed as an electron acceptor; through two times of mixing, drying, sintering and other processes,the material is prepared. The volume resistivity of the positive temperature coefficient material changes with temperature, the material is used for producing an anti-icing device, after voltage is applied to the device, passing current changes with temperature. When the device temperature is lower than 0 DEG C, the device generates larger leakage current for preventing icing, and when the temperature is higher than 0 DEG C, the device is in a high-resistance state, thereby reducing energy waste. The material can improve the anti-icing ability of a porcelain insulator, plays an important rolein safe and stable running of a power grid, and has potential application value for improving the anti-ice-disaster capability of the power grid.