Large-scale intermittent new energy grid-connected control technology is one of effective means to promote new energy exploitation. From the problems of large-scale intermittent new energy grid-connected operation, the key technologies are summarized. And then five technologies research are elaborated, which include wind and photovoltaic power cluster active power control, reactive power and voltage control for large-scale new energy base, on-line security pre-warning and control decision-making considering large-scale new energy, new energy and conventional power coordination control, new energy and energy storage coordination control. Finally, roadmaps about these technologies for further research are proposed.