The authors analyze the developmental process and technological route of deepsea mining experiment in the world . Incombination with China's situation, some opinions on the technological strategy on which deepsea mining experiment will be conducted are given . It is considered that the hydraulic mining system which possesses the most perfect technology and the most prospective commercial application should be taken as the main subject of study.At the same time when doing the work of basic study emphatically, small-scale model mining equipment should also be developed . In order to quickly develop the model mining equipment, the important task is to perfect the facilities for basic study and expand the laboratory construction.