The invention discloses a patina pseudomonas dry powder LAMP rapid detection reagent box and a rapid detection method based on the patina pseudomonas dry powder LAMP rapid detection reagent box. The reagent box comprises a freeze-drying isothermy expansion agent, reconstitution fluid, positive control dry powder, passive control, a colorimetric solution, a lysis solution and confining liquid. The freeze-drying isothermy expansion agent contains dNTPs, Bst DNA polymerases, expansion primers and a freeze-drying protective agent. The primers in the reagent box correspond to eight sectors of the patina pseudomonas specificity gene sequence, the colorimetric solution is added after reaction, and the passive and positive color developing difference is obvious. The reagent box has the advantages of being high in specificity, high in sensitivity, easy to operate, simple in result judgment and the like, and is suitable for safe and fast quality control detection of food safety, beverages, water, cosmetics and other raw and auxiliary materials. The reagent box is convenient to transport at normal temperature, and simple and fast in use; special apparatus is not needed; the cost is lowered; the product application range is widened; and the reagent box is more suitable for on-site quick detection and correlative detection of a basic-level remote region, and has wide application prospects.