The invention relates to the technical field of glass fibers, in particular to a novel glass fiber. The novel glass fiber is prepared from the following components in parts by weight: 56 to 62 parts of SiO2 (silicon dioxide), 18.3 to 24.2 parts of ZrO2 (zirconium oxide), 22.2 to 24.2 parts of Al2O3 (aluminum oxide), 10.3 to 12.6 parts of Fe2O3 (ferric oxide), 1.2 to 3.3 parts of CaF2 (calcium fluoride), 0.32 to 0.45 part of MgO (magnesium oxide), 1.5 to 3.5 parts of TiO2 (titanium dioxide), 2.4 to 3.25 parts of B2O3 (boric oxide), 0.32 to 0.45 part of Na2O (disodium oxide), 0.1 to 0.3 part of K2O (potassium oxide), and 0.23 to 0.35 part of MgF2 (magnesium fluoride). The raw materials are mixed, sent into a kiln, melted, and drawn into a raw wire. The novel glass fiber has the advantages that the anti-corrosive property is excellent, the production technology is stable, the unit energy consumption of the product is low, and the production cost is low.