Abstract: The recent years' development of high temperature superconductors, Y, Bi and Hg based on oxides,are briefly summerized. It is turned out that the powder in tube (PIT) technology has its unique virture in practical application, and the current research on PIT is active. Although the ion-beam-assisted deposition (IBAD) and the pulsed laser deposition (PLID) technologies have acquired attractive Jc value, some difficulties are exist in the process of practical utilization. Besides, the rolling-biaxial texture substrates (RABiTS) technology provides a new method for achieving functional HTSC tapes or wares in principle, which can be used in most systems of HTSC. On looking out the research in this field, if tapes with long size and sharp biaxture are fabricated, Jc will be surely higher, so further work on it is required.