Angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling microscopy (STM) have been used extensively in studying electronic structure and superconducting gap of the iron-based superconductors (IBSCs). In this talk, I will present some of our recent ARPES and STM results on the IBSCs, mainly focus on measurements of the superconducting state of many different IBSCs. Our results reveal some novel features of IBSCs, and provide input to the understanding of pairing symmetry and mechanism of IBSCs.