Disclosed is a method for unlocking an electronic equipment, and the method includes: the electronic equipment detects periodically whether there is an unlocking key in its surrounding environment, and when there is an unlocking key in the surrounding environment, transmits an unlocking request to the unlocking key; the unlocking key receives the unlocking request, determines in accordance with the unlocking request whether the electronic equipment matches the unlocking key, and when it is determined that the electronic equipment matches the unlocking key, transmits an unlocking signal to the electronic equipment so as to unlock the electronic equipment. Further disclosed are a device for unlocking an electronic equipment and an unlocking key for unlocking an electronic equipment. By means of the present disclosure, the unlocking key is enabled to automatically unlock an electronic equipment when it is disposed near the electronic equipment.