The high computational complexity and large memory requirements will be encountered when the transient responses from electrically large complex objects are considered using time domain integral equation (TDIE) numerical technique. Time domain adaptive integral method (TDAIM) is employed for reducing the computational scale of TDIE. The parallel technology was researched and the distributed electromagnetic computation based on .NET Remoting was implemented. Results show that the parallel scheme is effective for improving computational efficiency and solving the large scale electromagnetic problem.