The study expects the potential of polypropylene (PP) as a candidate for fused deposition modelling (FDM)-based 3D printing technique. Commercialized polypropylene with varied melt flow rate (MFR) was modified with filler and/or other component where the filler and additives can be wood flour, calcium carbonate, other polymers and so forth. Mostly, impact copolymer PP is adopted in FDM technique. In the study, two kinds of PP (coded PP1, PP2) were evaluated. As for PP1, the addition of wood flour decreases the shrinkage rate of PP by 25%. When the dosage of wood flour is 20wt%, the bucking property and surface property is better than those of other contents. The buckling height drops with the increasing atmosphere temperature and the lower printing layer depth. However in terms of limitation of wood appearance, other components were considered (Figure 1). When PP1 was added with 30wt% nano-calcium carbonate or 30wt% polycarbonate, the shrinkage rate of PP decreases and the buckling is restricted. The powder rubber and crystal whisker contribute little to decrease shrinkage property of PP. PP2 is block copolymer PP with unique combination of high fluidity, stiffness, low temperature impact resistance. When nano-calcium carbonate was added into PP2, both of the impact strength and modulus are promoted and the former even improved by 277%. The shrinkage rate in transverse direction decreases by ~4%. The petroleum resin helps improve modulus and impact strength a little. The shrinkage rate (machine direction) decreases by 16%. A few trials were conducted in which we changed the dosage of nano-calcium carbonate and petroleum resin separately. It is discovered that high content of nano-calcium carbonate brings about poor dispersion in the matrix and poor surface of product. Dosage above 10 wt% of petroleum resin leads to lower impact property and difficulty in the 3D filament preparation process. On the other side, the synthetic effect of nano-calcium carbonate and petroleum resin was analysed. As indicated in Figure 2, the shrinkage rate in two directions both decreases when 10wt% nano-calcium carbonate and 10wt% petroleum resin were added into PP2. However, the i