The invention discloses a rapid detection kit of nitrite nitrogen, a fabrication method of the rapid detection kit and a rapid detection method of the nitrite nitrogen. The rapid detection kit of thenitrite nitrogen comprises a package container, a developing water agent, a developing powder agent, a standard color card, an injector, a detection bottle and a second container, wherein the developing water agent, the developing powder agent, the standard color card, the injector, the detection bottle and the second container are accommodated in the package container, the detection bottle is provided with graduation lines, the second container is loaded with dilution water, the developing water agent and the developing powder agent are respectively loaded in a lightproof eyedrop bottle and alightproof first container, the developing water agent is diluted hydrochloric acid, and the developing powder agent is a mixed powder agent containing p-acetaminobenzenesulfamide, N-(1-naphthyl)-ethylenediamine dihydrochloride, sodium chloride, citric acid and/or a hydrate thereof. The rapid detection kit of the nitrite nitrogen is convenient to use, rapid detection of a site can be achieved, the rapid detection kit has relatively high practicability, and great convenience can be provided for a detection site in lack of detection equipment.