[en] The luminosity upgrades of Beijing Electron-Positron Collider (BEPC) and the design studies of Beijing τ-charm Factory (BTCF) in recent years will be reviewed. BEPC luminosity upgrades mainly with lower-β scheme have been performed in recent years. By lowering the vertical β function at interaction point from 8.5 cm to 5.0 cm the peak luminosity is nearly doubled at 1.55 GeV. The performance of dedicated synchrotron radiation operation is significantly improved by installing new insertion device and increasing the beam lifetime. The future upgrade options in BEPC are briefly discussed. The design studies of a new e+e- collider facility called Beijing τ-charm Factory have been making progress continuously. Besides the very high luminosity, say, specifically 1x10³³ cm^-2s^-1 at 2.0 GeV, BTCF is able to yield the high longitudinal polarization and the possibility of monochromator collision. In recent design studies the higher luminosity scheme with shorter bunch spacing by adopting larger crossing angle is investigated. A comparison between vertically and horizontally separated rings layout is made. The monochromator scheme with vertical crossing angle is explored which is compatible to the large horizontal crossing angle option and possible to reach much higher luminosity than that of head-on monochromator collision. (author)