The invention relates to the glass field, and discloses a composition for glass, chemically strengthened glass with low brittleness, a preparation method of the chemically strengthened glass with low brittleness and application of the chemically strengthened glass with low brittleness. The composition is prepared from the following components in percent by weight: 40 weight percent to 60 weight percent of SiO2, 15 weight percent to 35 weight percent of B2O3, 1 weight percent to 7 weight percent of Al2O3, 10 weight percent to 17 weight percent of Na2O, 0 to 4 weight percent of K2O, 8 weight percent to 15 weight percent of MgO, 0 to 6 weight percent of CaO, 0.01 weight percent to 3 weight percent of SrO, 0.01 weight percent to 3 weight percent of BaO and 1 weight percent to 8 weight percent of ZnO. The glass prepared according to the preparation method disclosed by the invention has the advantages of good toughening effect, higher strain point, higher modulus of elasticity, lower melting temperature, higher coefficient of thermal expansion, lower brittleness, excellent strength, excellent toughness, suitability for large-scale industrial production, compatibility for PDP (Plasma Display Panel) substrate production and capability of solving the PDP glass waste recycling problem.