In this talk, recent advances on space telescope pointing technologies for fine imaging performance of telescope are introduced. The special emphasis is on Hubble Space Telescope and James Webb Space Telescope. FGS(Fine Guidance Sensor) onboard HST and JWST is highlighted as a crucial component for  the spectacular scientific achievement. In particular, Cubesat-based telescope and precise pointing with commercial-off-the-shelf products are addressed. Recommendation on future research are made to enhance domestic technology level.