The invention discloses an air purification material, a preparation method therefor and an application of the air purification material. The material is prepared from the following raw materials in parts by weight: 31-39 parts of seaweed mud, 8-16 parts of naphthyl acetic acid, 3-11 parts of nano zinc oxide, 5-9 parts of triethanolamine and 1-5 parts of guar gum. The method comprises the steps: mixing the seaweed mud with the nano zinc oxide, carrying out grinding, adding a solution of triethanolamine into the mixture, and carrying out sealing, heating and stirring, so as to prepare a mixture A; mixing the guar gum with a solution of naphthyl acetic acid, and carrying out sealing, heating and stirring, so as to prepare a mixture B; and mixing the mixture A with the mixture B, carrying out ultrasonic treatment, carrying out stirring until the mixture is dried, and carrying out calcination, thereby obtaining the air purification material. The material prepared by the method has extremely high porosity, has an adsorption reinforcing effect on adsorptivity to toxic and harmful substances and is light in mass, and thus, the use becomes more convenient. According to the air purification material, the adopted raw materials are extremely simple and are wide in source, the preparation process is convenient to operate and control, and the production cost is reduced substantially, so that the material is suitable for being industrially produced.