The invention discloses a waste paper fiber environment-friendly foamed material based on rosin bonding. The material is composed of the following components, by mass: 70-92% of paper pulp, 3-12% of rosin, 3-15% of a foaming agent, and 2-3% of an auxiliary agent. A total mass of the above components accounts for 100%. The invention also discloses a preparation method of the material. According to the method, paper pulp, rosin, the foaming agent and the auxiliary agent are well mixed; the mixture is self-foamed in air, and is heated in a microwave oven; and the obtained product is heated and dried in a baking oven, such that the material is obtained. According to the waste paper fiber environment-friendly foamed material based on rosin bonding, rosin is adopted as a bonding agent, such that foamed material hardness can be well improved. The waste paper fiber foamed material satisfies environmental protection requirements. Also, waste (waste paper) is recycled and reused, such that the material meets the concept of environmental protection. The material has the advantages of excellent comprehensive performance, high technological content, high market competitiveness, and low market risk. The preparation method is simple and is convenient to operate.