The Ground Support System (GSS) is a critical component of the Space-based multi-band Variable Objects Monitor (SVOM) mission’s ground segment. Its main tasks include organizing and implementing the operations and management of the SVOM payloads, receiving scientific data, as well as preprocessing and managing the scientific data. To address the specific requirements of the SVOM mission, including specialized mission planning, data reception, status monitoring, and product processing, a dedicated SVOM GSS has been designed based on the integrated architecture of the Chinese Space Science Satellite Project GSS. This system has successfully supported SVOM’s launch and on-orbit operations.