A method for tracing back complicated test data comprises defining essential information and property information of the test data class by a test data trace back file; leading the trace back relationship to obtain the test data class name and forming the corresponding virtual class; analyzing the trace back relationship to add the essential information and the property information in the test data trace back file according to the object-oriented mode into the virtual class; registering the trace back relationship to add the virtual class information into the trace back information base, and acquiring the virtual class essential information and property information form the trace back information base according to the registered normalizing format to obtain the test data. The method can solve the problem of data trace back management of the complicated product and provide the test data support having the trace back relationship for the complicated product development.