There are many advantages applying grouping silos in large export coal terminal，such as high level of automation，environmentally friendly and smaller footprint etc. But there is no mature standard for reference about the grouping silo handling process layout. However，the calculation based on the empirical formula cannot accurately reflect the influence of different handling process layout schemes on the passing capacity. This paper is based on the Phase 3 and Phase 4 projects of coal harbor at Huanghua Port. According to the different layout of the grouping silos，four typical handing process options were put forward. Then the reasonable terminal throughput capacity of every option was got by the simulation study with Simio. At last，detailed comparisons were taken among the four options about the main technical and economic indicators，and a few suggestions were given about the grouping silos layout for similar projects.