A method for setting up a system of a reagent chip analyzer is provided. The method is adapted to modify parameters and testing conditions according to data of an authorization tag, so as to improve the adaptability range of the reagent chip analyzer for reagent chips of multiple specifications. The method includes: reading an identification code, authorization times, and specifications and analysis parameters of the reagent chip from an RFID tag; determining whether to load the specifications and the analysis parameters of the reagent chip according to the identification code and the authorization times; and if it is determined to load the specifications and the analysis parameters of the reagent chip, decreasing the authorization times by one, and analyzing the reagent chip according to the specifications and the analysis parameters of the reagent chip.