The utility model discloses a floating surface type permanent magnet tool box which comprises a box body. The inner walls of the four side faces of the box body are provided with semispherical permanent magnets at internals. The upper end of the box body is provided with a handle. The two ends of the handle are connected with the box body through rotating shafts respectively in a rotating mode. The back of the box body is provided with hooks, and one or more hooks are arranged. According to the floating surface type permanent magnet tool box, the permanent magnets are utilized to absorb metal tools to the inner walls or the outer walls of the box body so as to fix the box body, work efficiency is improved to a large degree, and meanwhile the risk that people are hurt by falling tools is lowered.