Abstract: The present invention relates to a recognition and calibration method for the blood gas chemistry analytic system, which comprises the following steps: getting reagent information recorded in the two-dimension code glued to or printed on the test card or reagent package; extracting the basic information of the test card from the reagent information, examining the correctness of the usage of the test card and feeding back the error messages and exiting the test if the usage is incorrect; if the usage is correct, extracting the feature information of the test card from the reagent information, obtaining the feature parameters of the test card and setting them as the feature parameters of the present test; collecting the present test signals and processing the operation of computation and adjustment for the signals according to the feature parameters of the present test and thus, obtaining the test results.