Double-solid slow-release air purifying agent

The invention relates to a double-solid slow-release air purifying agent. The air purifying agent comprises gel and an auxiliary material bag which acts with the gel and enables the gel to release chlorine dioxide, and the gel comprises the following raw materials in parts by weight: 1 part of sodium carbonate, 10-12 parts of sodium chlorite, 1 part of sulfate, 72 parts of water and 8-10 parts of water-absorbent resin; and the auxiliary material bag comprises the following raw materials in parts by weight: 2 parts of calcium chloride, 2 parts of calcium oxide, 2 parts of sodium dihydrogen phosphate and 2 parts of sodium bicarbonate. When the purifying agent is used, the auxiliary material bag is unsealed, then contents in the auxiliary material bag are poured out to cover the gel, the two materials react to release chlorine dioxide, and the release process is limited by the barrier effect of the gel formed by the water-absorbent resin, so that the chlorine dioxide can be slowly released from the gel; and the calcium chloride and the calcium oxide release heat after absorbing water, so that the sodium chlorite decomposition reaction is accelerated. Compared with the prior art, the air purifying agent can slowly release chlorine dioxide gas, reaction starting is fast, and the effective service life is long.