Storage method for storage substances through reducing oxygen to kill pests

The invention discloses a storage method for storage substances through reducing oxygen. The method comprises a first oxygen reducing step and a second oxygen reducing step, wherein in the first oxygen reducing step, the concentration of oxygen in the sealed storage substances is reduced to 3-8% or less than 3% through physical replacement, and in the second oxygen reducing step, the concentration of oxygen in the sealed storage substances is reduced to less than 2% through chemical reaction. The invention also discloses a storage substance curing agent and a preparation method of the storage substance curing agent. By utilizing the method provided by the invention, the concentration of oxygen can be reduced to less than the lethal concentration of pests in the storage substances of 2% within 48 hours, and the concentration of the oxygen is reduced to less than 0.3% within 10 days, thereby the purpose of killing pests through quickly reducing oxygen is achieved. The method and/or the curing agent provided by the invention also have the advantages of no pollution and environment protection.