The invention discloses a method for preparing a high-hardness high-strength-and-toughness iron-based wear resistant material through secondary alloying. The method comprises the following steps: (1) smelting raw materials, and then preparing alloy powder A through a water mist method, wherein the alloy powder A contains the following elements in percentage by mass: 18-23% of Cr, 0.8-1.8% of Mo, 0.6-1.5% of Ni, 0.3-0.8% of Ti, 0.4-1.0% of Si, 0.6-1.2% of V, 2.4-2.9% of C and the balance of Fe; and (2) performing ball milling on 7-10 parts by mass of powder B and 90-93 parts by mass of alloy powder A, mixing, adding a forming agent to prepare a blank, and sintering to obtain the iron-based wear resistant material, wherein the powder B comprises the following components in percentage by mass: 12-24% of Cu, 12-20% of Ni, 9-15% of Mo, 6-12% of Mn, 15-25% of TiC and the balance of Fe. The iron-based wear resistant material disclosed by the invention has favorable physical and mechanical properties, and reaches the technical standard of a corresponding designation of an industrial steel bond hard alloy.