Communication system and method capable of automatically redialing

The invention discloses a communication system capable of automatically redialing, which comprises a server end and a communication terminal; the communication terminal comprises a communication module, a processor and a memory; the communication module is respectively connected with the processor and the memory; and the server end communicates and is connected with the communication module. A communication method for automatically redialing comprises the following steps that: whether the server end has data to be updated or not is detected; if yes, new data is downloaded and replaces a database of telephone numbers which can be redialed and are stored in the memory; if not, a call is made directly according to a called number selected by a user; and the state of the called number is judged and re-dialing is carried out. According to the invention, the range of telephone numbers for re-dialing for countless times is limited, so that not only is the normal re-dialing requirement of the user met and great conve