Recently the mobile service is gaining a rapid expansion, which has brought a lot of concerns in various areas of researches. As a major business of the mobile services multimedia messaging service (MMS) has the very important research values. In this paper we have carried out a detailed measurement on the multimedia messaging service social network. According to the measurement results, the MMS social network shows a small world property. This social network complies with the power law distribution and has a small average path as well as a high clustering coefficient. The node degree correlation of MMS is different from other kinds of social networks. The geographical property is also an important factor which affects the users' behavior. Finally we discuss the status of huge degree nodes in the MMS social network.