The GUI automatic test system based on keywords in XML technology is proposed to research on how to improve Web application automatic test efficiency. Using XML technology to design and package keyword, finish writing automated test scripts, test engine to parse the XML file, the explanation key navigation test execution, and report generation. In the case of ERP products show that the system can achieve the test script design, enhance the readability and maintainability, reduce the difficulty of preparation, and enhance the efficiency of the testing procedure.