The invention discloses an easily torn box packing tape which comprises a paper tube and a transparent adhesive tape main body wound on the paper tube, wherein a colorful tape is arranged on the rear side of the adhesive tape main body; the rear side of the colorful tape is arranged as a finishing surface; the colorful tape is arranged along the length direction of the adhesive tape main body; the colorful tape is located on the middle part of the adhesive tape main body; a plurality of U-shaped notches are equidistantly arranged along the length direction of the colorful tape at intervals; the notches simultaneously penetrate through the thickness directions of the colorful tape and the adhesive tape main body; colorant line layers are respectively arranged on the two sides of the adhesive tape main body along the width direction; a bar-shaped slot is formed in the middle part of the adhesive tape main body along the length direction; and paraffin mixed with the colorant is filled in the bar-shaped slot. Before the easily torn box packing tape is used, the easily torn box packing tape is heated through an air blower. According to the invention, through the combined use of two anti-fake modes of the colorant line layers and the bar-shaped slot, consumers can immediately know if the box packing tape is torn by the others in advance.