  Despite decreasing cosmic star formation rate density over the last 10 Gyr,
the stellar mass ($M_{*}$) buildups in galaxies were still progressing during
this epoch. About 50\% of the current $M_{*}$ density in the universe was built
over the last $\sim 8.7$ Gyr. In this research, we investigated the stellar
mass buildup and quenching of spatially resolved regions within massive disk
galaxies over the last 10 Gyr. We apply the spectral energy distribution (SED)
fitting method to SEDs of sub-galactic regions in galaxies to derive the
spatially resolved distributions of SFR and $M_{*}$ in the galaxies. This
namely \textit{pixel-to-pixel SED fitting} method is applied to massive disk
galaxies at $0.01<z<0.02$ and $0.8<z<1.8$. We found that massive disk galaxies
tend to build their $M_{*}$ and quench their star formation progressively from
the central region to the outskirts, i.e. \textit{inside-out} stellar mass
buildup and quenching.
