This paper has studied the encryption of data in mobile’s graphic communication, and the computing power cannot be compared with the computer due to the limited performance of mobile devices. Therefore, this paper uses a highly efficient and lightweight characteristics: X-IDEA encryption algorithm, it is a improved IDEA algorithm. This nalgorithm has improved IDEA more suitable transmission used in mobile graphics safe, more suitable the current variable size Photo in 3G, while the presence of an increased possibility of the same part of the case.