The invention provides an attapulgite particle air purification agent which is prepared from the following raw materials in parts by weight: 40-50 parts of modified attapulgite, 4-6 parts of chamomile essential oil, 2-3 parts of ylang essential oil, 1-2 parts of eucalyptus essential oil, 1-2 parts of essential oil of jasminum, 1-2 parts of mastix essential oil, 6-8 parts of glycerol, 8-10 parts of ethyl alcohol, 1-2 parts of chitosan, 6-8 parts of sodium fluoride, 4-5 parts of tartaric acid and 8-10 parts of sodium dodecyl benzene sulfonate. A preparation method of the attapulgite particle air purification agent comprises the following steps: mixing modified attapulgite with chitosan, sodium fluoride, tartaric acid and sodium dodecyl benzene sulfonate for pelleting, then uniformly mixing with essential oils such as chamomile essential oil and the like and subsequently packing to prepare the attapulgite particle air purification agent. The air purification agent has the functions of purifying air, sterilizing, relaxing mind, deeply relaxing, relieving worries, calm heart, calming nerves and promoting sleep; the air purification agent is long in fragrance releasing time and has a long-term effect.