To perform locking/unlocking operations with excellent operability without being accompanied by the vertical operation of a table in a movable table.

By constituting a using form selecting means 50 so as to select the fixed form and movable form of the moving table by locking and unlocking the rotation of casters X1, the moving table is not vertically moved in selecting the form of the moving table, weight on the side of the moving table is not added as form selecting operation force, and even when a heavy object is mounted on the table, the form of the moving table is lightly changed with small operating force without being affected by that. In comparison with the constitution that the weight on the side of the moving table is reflected as the form selecting operation force as before, the operability is improved remarkably, thus even a relatively powerless user such as an elderly person can easily perform an operation and the remarkable improvement of the merchandise value of the moving table is expected.