As the efficiency to produce light ion beams is much higher than the lasers, they are expected to become the future energy drivers for the inertial confinement fusion. So, the main issues described here are their productions, transportations and target irradiations. The world top machine is now under operation to arrive at a mile stone to obtain 30 MV-4 MA singly ionized lithium beams in USA. Future prospects for such kind of light ion beams are also shown briefly.