Abstract: In view of insufficient bearing capacity and durability of tunnel support structure and so on, a SCCfilled thin-walled steel tube support was proposed as a major support method based on theoretical calculations. The required support force and internal force of structure under the stress of protolith were calculated, with the results showing that the support force is larger than structural internal force; the SCC-filled thin-walled steel tube support scheme was designed and its pressure and displacement were monitored and analyzed, with the monitoring results showing that the max. pressure borne by support is no more than 1.50 MPa and the max. displacement is no more than 60 mm, meeting the requirements of tunnel support.