Based on observations from the Transiting Exoplanet Survey Satellite (TESS), we conducted a comprehensive study of two contact binaries, V752 Cen and HT Vir, in 2+2-type hierarchical quadruple stellar systems. TESS continuous light curves (LCs) reveal that \(\Delta m_{max}\) exhibits random-walk-like or quasi-periodic variations, whereas \(\Delta m_{min}\) , shows small jumps. Using the Wilson–Devinney program, we obtained six sets of photometric solutions to trace the migration and evolution of a cool starspot on the stellar surface. Notably, such spot activity can significantly alter LCs and may even reverse minima depths, as observed around BJD \(_{\text {TDB}}\) 2459282 for V752 Cen. From the TESS time-series LCs, we determined 529 eclipse timings (ETs). For HT Vir, the residuals of the primary and secondary minima show a strong anti-correlation, indicating the presence of starspots. Based on all available ETs, we constructed \((O-C)\) curves, which could be described by an upward parabola with the light-time effect (LiTE) induced by a third body. Given the third light of \(\ell _3\sim 4.0\%\) for HT Vir, we estimate the mass of the third body to be \(M_3=0.66(2)~\textrm{M}_{\odot }\) . For V752 Cen, the minimum mass of the third body is \(M_3=0.84(2)~\textrm{M}_{\odot }\) , suggesting it may be a compact star. Finally, we updated the absolute parameters of the two studied binaries, whose components are normal or slightly evolved main-sequence stars.
