Anti-freezing heating wire

The invention relates to an anti-freezing heating wire. The anti-freezing heating wire comprises a heating wire body, wherein periphery of the heating wire body is wrapped in a warm keeping layer, periphery of the warm keeping layer is provided with an insulation layer, periphery of the insulation layer is provided with an anti-wear layer, periphery of the anti-wear layer is provided with a waterproof layer, the warm keeping layer is acrylic fibers, and the heating wire body is spirally wound by the acrylic fibers. Compared with the prior art, the anti-freezing heating wire is advantaged in that the integral structure is simple, the manufacturing process is convenient, good warm keeping effect, strong anti-freezing effect, good waterproof effect, high insulation property, no-easy fault generation and good safety property are realized, and the anti-freezing heating wire satisfies demands of people. 本发明涉及种抗冻电热丝，包括电热丝本体，电热丝本体外围包覆有保暖层，保暖层外围设有绝缘层，绝缘层外围设有耐磨层，耐磨层外围设有防水层，保暖层为腈纶丝，腈纶丝螺旋缠绕电热丝本体。本发明与现有技术相比具有下列优点：整体结构简单，工