Provided is a micro-fluidic chip detecting reaction device with a reagent storage function. The detecting reaction device comprises a micro-fluidic chip and a driving device; long-term storage, fast release, reagent driving and detecting reacting of a dry reaction reagent and a wet reaction reagent are achieved through cooperation of the micro-fluidic chip and the driving device, and finally POCT type on-site fast detection is achieved. The micro-fluidic chip comprises a reagent storage module and a detecting reaction module; the reagent storage module comprises a cover plate, a storage structure plate and a connecting structure plate; the detecting reaction module comprises a reactor; before detection, half of the reactor is embedded into a groove of a chip locating base, then the reagent storage module is placed on a chip butt joint base, and the reagent storage module is moved under guidance of a square guide rail to be in fast butt joint with the detecting reaction module. Thus, the two modules of the chip are fast assembled, and the micro-fluidic chip and the driving device are mutually positioned and fixed.