Abstract
For further precise investigation of the moon following on SELENE planned for the launch in 2004, exploring the lunar surface is inevitable. This paper describes the critical technologies such as guidance & navigation, obstacle detection, power supply, mobirity system, etc. and has clarified some technical issues for achieving lunar soft landing and exploration. Besides R&D implementation plan including ground test to develop these technologies are discussed. According to the plan the first Japanese soft landing experiment onto the moon is expected to be realized in 2006.