  With an electron-positron collider operating at center-of-mass-energy 2-7 GeV
and a peak luminosity above $0.5\times10^{35} cm^{-2} s^{-1}$, the STCF physics
program will provide an unique platform for in-depth studies of hadron
structure and non-perturbative strong interaction as well as probing new
physics beyond the Standard Model in the $\tau$-Charm sector, succeeding the
present Beijing Electron-Positron Collider. To fulfill the physics targets and
further maximize the physics potential at STCF, the STCF tracking software
should have capability to reconstruct charged particles with high efficiency
and excellent momentum resolution, especially for the charged particles with
low transverse momentum down to 50 MeV. A Common Tracking Software (ACTS)
providing a set of detector-independent tracking algorithms is adopted for
reconstructing charged tracks with the information of two sub-detectors, a
$\mu$RWELL-based inner tracker and a drift chamber, at STCF. This is the first
demonstration of ACTS for a drift chamber. The implementation details and
performance of track reconstruction are presented.
