Abstract: The present invention discloses a modeling paste composition which comprises 120-150 parts by weight of a first solvent; 50-100 parts by weight of a second solvent; 18-25 parts by weight of polyvinyl alcohol; 2-3 parts by weight of thickening agent; 1.5-3 parts by weight of preservative agent 10-15 parts by weight of glycerol; 5-10 parts by weight of borax; and 10-15 parts by weight of polystyrene beam. This invention also discloses a preparing method and use thereof. The modeling paste resulting from the above technical solution has the advantages of light-weight, non-fluidity, moisture retention for a long time.