An anti-mold packet comprises a holding pouch (10) and an anti-mold volatile substance (20). The holding pouch (10) has an upper edge (12), a lower edge (13), a left edge (14) and a right edge (15). The left edge (14) and right edge (15) are respectively bent and folded to form a holding space (16) and a folded seam edge (17). The upper edge (12) and lower edge (13) are pressed and sealed. The folded seam edge (17) is partially pressed and sealed to form a slit (18) communicating with the exterior. The anti-mold volatile substance (20) is held in the housing space (16). The housing space (16) can hold a greater amount of the anti-mold volatile substance (20) in a packet fashion, and the anti-mold volatile substance (20) can evaporate through the slit (18) for a longer period to achieve durable anti-mold purpose to meet use requirements.
