Based on the photometric data from Transiting Exoplanet Survey Satellite (TESS) and Wide Angle Search for Planets (SuperWASP), we conducted a detailed study of four solar-type contact binaries. Continuous light curves, characterized by intrinsic variability, offer valuable insights into the migration and evolution of cool spots. With the Wilson-Devinney program, we deduced photometric solutions for these binary systems, and then derived their spot parameters. For V829 Her and V839 Cen, notably, the spot emerges, disappears, and reemerges over the observing time. We determined 1515 eclipse timings (ETs) from TESS and 226 from SuperWASP observations. The (O – C) curves, constructed from all available ETs, all exhibited upward parabola trends with cyclic oscillations. The modulation periods, ranging from one to two dozen years, were attributed to the light-time effect via the presence of a third body. Therefore, four solar-type contact binaries may form hierarchical triple-stellar systems.