##### AUTHOR #### Jiasheng Huang ##### TITLE #### Formation of Massive galaxies at z~2 ##### ABSTRACT #### I will present a multi-wavelength study of a large 24micron selected sample at z~2. The study will focus on the total infrared luminosity density, stellar mass density of this population, and compare with the whole galaxy population at the same redshifts. The rest-frame 8 micron luminosity function is also derived for this population and compare with the locka one.