An electronic device and a method for confirming a short message of the electronic device include setting variables to confirm the short message received by the network, enabling a timer, and assigning the variables. The confirming method includes acquiring values of the variables, and sending a DBM including the short message to the network and waiting for an acknowledge DBM, if the electronic device attempts to access the network and needs to send the short message. The confirmation method further includes queue up the DBM in the electronic device, if the electronic device does not attempt to access the network, the duration of the timer has not elapsed, and needs to send the short message.