The invention discloses a vehicle-mounted space air purifying agent which is prepared from the following raw materials in parts by weight: 300 to 400 parts of modified
zinc ricinoleate, 100 to 200 parts of natural
plant extracting solution, 20 to 80 parts of
plant essential oil, 0.2 to 3 parts of macromolecular water-soluble sterilizing agent and 300 to 500 parts of deionized water, wherein the natural
plant extracting solution is a mixture of two or several of an aloe extracting solution, a bracketplant extracting solution, a
scindapsus aureus extracting solution, a
green tea extracting solution or lily extracting solution, and all the extracting solutions are prepared form pure natural plants; the plant
essential oil is one of lemon
essential oil,
lavender essential oil or violet essential oil; the macromolecular water-soluble sterilizing agent is prepared by compounding any two of Tego2000 sterilizing agent,
propylparaben, methyl
paraben or
phenoxyethanol. The air purifying agent has the characteristics of no
toxicity, no harm, greenness, environmental friendliness, natural degradability, no secondary
pollution to air and environment, ability in removing harmful air and peculiarsmell, ability in killing
bacteria, inhibiting
bacteria and freshening air at the same time and the like.