Method and device for detecting whether network is usable

The invention provides to a method and a device for detecting whether a network is usable, which are applicable to the field of computer application. The method comprises the following steps: starting network testing service and broadcasting data packet after the system kernel and driver of the native device are loaded; the native device respectively storing the successfully transmitted and received byte numbers into two system files; and detecting whether the network of the native device is usable by reading the byte numbers in the system files. In the embodiments of the invention, the application program loading step which takes the longest time in the start of the local device is avoided due to the network detection of the local native device after the system core and driver of the local device are loaded, in this way, when producing the device for detecting the network of electronic apparatus, the time from starting to finishing the network detection of the device is greatly shortened, and the test statio