The invention discloses a low-emission polypropylene reclaimed material and a preparation method thereof. The polypropylene reclaimed material is composed of the following components in percentage by weight: 96.0-98.8% of polypropylene reclaimed material, 1.0-3.0% of adsorbent and 0.2-1.0% of antioxidant. The secondary processing on the polypropylene reclaimed material can aggravate the degree of oxidative degradation. The adsorbent added into the polypropylene reclaimed material can effectively adsorb low-molecular compounds, and meanwhile, adsorb and remove the acidic substances and residual catalyst in the melt, thereby inhibiting the material from further degradation and further effectively reducing the influence of the oxidative degradation of the polypropylene reclaimed material on the emission performance in the secondary processing process.