Abstract: A system and a method for analyzing reason of network connection failure are applied to an electronic information device supporting a wireless network. The system includes an enabling module and a processing module. The enabling module is used for the electronic information device to scan a status of the wireless network, and obtains data of parameter settings when the wireless network is scanned. The processing module is used for analyzing a reason of connection failure between the electronic information device and the wireless network according to the data of parameter settings obtained by the enabling module and parameter data entered by a user, and subsequently informing the user of the reason of the connection failure.

Abstract: A message validity determining method is applied to a wireless network for allowing a user to know whether a connection-established message emitted by a wireless base station are correct after the user has input an encryption parameter in an information equipment and the information equipment has been connected to the wireless network. When receiving the connection-established message, the information equipment emits a testing message to the wireless base station. If the wireless base station replies with a test-replying message, the information equipment is determined to be connected to the wireless base station. Therefore, validity of the connection-established message is determined according to a mechanism of whether the wireless base station replies with the test-replying message after receiving the testing message, so that subsequent operations can be properly taken, such that the user is not confused or misled by simply receiving the connection-established message from the wireless base station.