The invention relates to storage lubricating grease and a method for preparing the same. The storage lubricating grease consist of the following ingredients in part by weight: 1,800 to 2,100 parts of polyalphaolefin, 30 to 40 parts of calcium hydroxide, 50 to 65 parts of 75# ceresine wax, 40 to 60 parts of boric acid, 60 to 80 parts of butyl alcohol / n-butyl alcohol, 70 to 80 parts of 12-hydroxy stearic acid, 40 to 60 parts of purified dimer acid, 40 to 60 parts of glacial acetic acid, 2,000 to 2,500 parts of cleaning agent, 700 to 900 parts of 0.25 percent oil orange and high-viscosity lube base oil, 2,030 parts of diphenylamine and 10 to 20 parts of anti-rusting agent. The preparation method comprises the following steps of: 1, charging; 2, saponifying; 3, performing supplement saponificatio; 4, cooling to reduce temperature; and 5, dewaxing to obtain the finished product of the storage lubricating grease. The storage lubricating grease of the invention can effectively resist corrosion of chemicals, oil, water and gas and avoid affecting rubber and plastics and is applicable to the environment polluted by chemicals, oil or water at extremely high temperature. The deformed steel bars are not rusted under the protection of the storage lubricating grease.