An apparatus for testing a keyboard of a mobile phone, includes a testing controller, a key triggering device, an analog to digital (A/D) converter, and a switch assembly connected to the key triggering module. The switch assembly includes a plurality of switches. The key triggering device includes a key triggering module connected to the keyboard. The testing controller sends a controlling signal to trigger a key of the keyboard to turn on a switch corresponding to the key, triggering the key, and comparing activating information of the switch to the key value from the mobile phone to determine if the result is correct.