The invention provides automated testing method and system for a filter network card. The method comprises the following steps: maintaining a pentad rule table; constructing a message according to a pentad in the pentad rule table or a randomly generated pentad; counting information needing to be generated by the filter network card aiming at the constructed message; adding the counted information to the tail of the message as the data part of the message; sending out the acquired message; using the filter network card to receive the message; comparing the counted information in the data partof the message with true information generated by the filter network card; and confirming whether the function of the filter network card is right or not. The invention can find problems existing in the filter network card in time, thereby improving the system efficiency and the system performance.