A method and system for automatically executing an internationalization test of web applications by recording and utilizing HTTP transmitted and received data in the internationalization test in a multilingual web application. By processing and storing recorded HTTP transmitted and received data in a base language to prepare an HTTP request corresponding to a user specified test object language to a web server, a test is automatically executed while emulating user operations on the web browser in the test object language. This generates corresponding HTTP transmitted and received data in the test object language. By comparing and analyzing the HTTP transmitted and received data in the base language and test object language, a required verification for an internationalization test is automatically conducted and the verification results are stored or recorded for later use in subsequent operations.