This article introduces new progress of research on theory and application of superconductivity, especially for year 2001. In reconsidering superconductive microscopic mechanism, the evidence shows to exist for strong electron_phonon coupling in high_temperature superconductors. In exploring new superconductive materials,there mainly are MgB 2, P3HT and C60,etc.superconductive applications outlook both practical and potential seem good, expecially,such as energy resource,electric force,microwave telecommunication,computer,medical cave and various dectors,etc.