In the network of the transfer of tele-communication of seismological stations,besides the computer equipment,there are also some seismo-logical speical equipments such as earthquake triggers,remote coding units,SZ-3 reproductive locating installation and SC-60 light oscil-loscopes.These equipments must be connected to the computer through interfacing circuits.And these interfacing circuits are devised by the network users themselves.Therefore,in the course of devising and connection,we must pay attention to the relative convention of the computer interfacing.Otherwise,not only the reliablity of the special epuipment will be influenced but also the reliablity of the whole sys-tem of the computer.In this paper,the author discusses briefly some problems which must be solved in the connection of seismological speci-cal equipments and the computer system.and the author also proposes some concrete methods which may serve as the reference for connec-tion and adjustment.