The Super Charm Tau Factory (SCTF) is a newly proposed
electron-positron collider with an energy range of 2–7 GeV in the
center of the mass system and luminosity of about
1035 cm-2s-1, instrumented with Super Charm-Tau
Detector. The innermost part of the SCTD is the inner tracker
(IT). The main tasks of IT are the extension of the lever arm of the
drift chamber, detection of soft hadrons, and reconstruction of the
secondary particles that decay in the IT. The main candidates for IT
are silicon strip detectors, cylindrical MPGD detectors, and a time
projection chamber (TPC). This paper discusses the results of
simulation studies of the TPC detector in detail and the plans for
the inner tracker development.