The invention discloses a helicobacter pylori rapid-growth additive. The rapid-growth additive is prepared by the following components in parts by mass: 500 parts of pig stomachs, 500 parts of beef, 7 parts of sodium chloride, 1 part of insoluble starch, 1 part of urea, and right amount pure water and sodium bicarbonate; the pH value is adjusted to be 7.4 to 7.6; after pretreatment, stripping and slicing, boiling for two times, filtering, filter liquor mixing and cold storage, boiling again, cooling, filtering, constant volume, sodium chloride addition, insoluble starch and urea dissolution, pH adjustment, sterilization and storage are performed on raw materials sequentially, the rapid-growth additive is prepared. The rapid-growth additive provided by the invention has the advantages that the lag phase of indicator bacteria is promoted to be shortened when the indicator bacteria are cultured in vitro, the growth and reproduction time of the indicator bacteria on culture medium is shortened effectively, the detection positive rate is improved, the rapid-growth additive is used for preparing high-quality helicobacter pylori isolation medium, and the rapid-growth additive can be prepared through the preparation method disclosed by the invention.