The invention discloses a novel soil modifier. The novel soil modifier is prepared from, by weight, 5-25 parts of vinegar residues, 3-20 parts of potassium feldspar, 80-110 parts of straw, 1-15 parts of rare earth silico-calcium mineral substance, 1-10 parts of asparagus residues, 5-25 parts of pomace, 3-20 parts of saw dust, 3-20 parts of bean pulp, 1-12 parts of charcoal, 1-14 parts of yellow cinnamon leaves, 1-10 parts of polymerization amino acid, 1-6 parts of citric acid, 1-15 parts of garden burnet roots, 0.1-3 parts of water-retaining agent, 1-10 parts of rice bran wax, 1-10 parts of sodium silicate and 0.1-5 parts of polymaleic acid. The novel soil modifier has the functions of reducing the pH of soil, improving the physical structure of the soil and increasing soil fertility; when the novel soil modifier is applied in the plant growth earlier stage, the desalting effect is remarkable, the influence of salt damage on plant seedling emergence can be effectively reduced, the production cost can be reduced, the nutrient substances of the soil modifier are effectively enriched, and the growth needs of crops are met.