Recharging method, device and system

The invention discloses a recharging method, a recharging device and a recharging system. The method comprises the following steps: receiving a fixed wireless phone recharging request sent by an internal mobile number which is a calling number; changing the calling number sending the recharging request into a correspondingly fixed phone number according to the corresponding relationship between the internal mobile number of the fixed wireless phone and an external fixed phone number; and carrying out recharging trigger of the fixed phone number according to the recharging request of the changed fixed phone number. According to the invention, a native recharging business of the fixed wireless phone can be realized, and the technical defect that an existing mobile network recharging system may cause recharging failure when a user of the fixed wireless phone recharges for the native phone, so that native recharging of the fixed wireless phone cannot be realized, is solved.