The utility model discloses an automatic test script method and device based on the functional package. The method comprises the steps as follows: the test target collected from the test cases is decomposed according to the functions and each function can be decomposed into a basic operational unit; separate the operational logic from the operational data in the basic operational unit; package thebasic operational unit function based on the operational data and establish the basic operational unit function bank; constitute the basic operational unit function with the same function and set theparameters of all the basic operational unit functions as the parameters of the function, so as to establish the functional bank; according to the test cases, constitute the functions into the automatic test scripts for the test cases; also, abstract the test data of the case scripts, so as to establish the automatic test scripts database. The utility model can enhance the compatibility of the case scripts and reduce the workload of script maintenance as well as the script writing difficulty.