Heat-stripping temporary positioning film

The invention discloses a heat-stripping temporary positioning film, which comprises a base layer, an auxiliary later, a bonding layer and a first protective layer, wherein the base layer, the auxiliary layer, the bonding layer and the first protective layer are sequentially laminated together from bottom to top; the auxiliary layer is prepared from the following raw materials in percentage by weight: 95%-97% of resin, 0.8%-1% of a filler, 0.8%-1 of a first assistant and 0.8%-3% of an initiator; and the bonding layer is prepared from the following raw materials in percentage by weight: 50%-51% of acrylic acid 2-amphotericin B methyl ester, 35%-37% of ethylacrylic acid 2-ethyl propyl ester, 0.1%-0.2% of an initiator, 0.5%-0.7%of a second assistant, 11.5%-12.5% of silica propylene stripping assistant and 0.8%-1.5% of a third assistant. A uniform glue distribution layer is formed by virtue of the auxiliary layer and the bonding layer with specific formulas; the heat-stripping temporary positioning film has adhesive force at a room temperature; and the viscosity disappears about 30 seconds after the positioning film is heated to a proper temperature, so that simple stripping can be achieved; the stuck product is not damaged, and is free of a residue; and processed products can be well protected.