With the development of the wireless technology, such as Bluetooth, GPS and gravitational acceleration sensing, there is a new opportunity for the development of the MSNS(Mobile Social Network Services). After discussing the application development of mobile social network services based on the background of reality world, this paper introduces the architecture and design of MSNS. In the system, the key function is developed based on android operation system. The MSNS system of reality oriented cuts the distance between people, making people go out from virtual social network into realistic social network.