PURPOSE: A cultivation system is provided to secure operation path by moving the bed whenever it is needed having only one operation path per one building by making a bed transportable.CONSTITUTION: After fitting average height of one end of each column rectangular pipes(3) by laying underground, each rectangular pipe socket are inserted on the outer area at the end of two column rectangular pipe which is not laid underground and the end of horizontal bar(24) which is composed of the rectangular pipe into the horizontal inserting groove. The interval of the column rectangular pipe and the horizontal bar are fixed by fastening a piece to a gap bar standpoint raised spot bolt groove after putting on a gap fixing bar(21) to the gap bare standpoint raised spot connecting in a row. A bed operating roller in a bed operation roller frame inserts the two bed operation roller frames into the horizontal bar to ground at the upper surface of one horizontal bar and is fastened by inserting one end of the vertical rectangular pipe at each bed operation roller frame rectangular pipe groove. A bed operation pipe(18) is inserted in the bed operation pipe inserting groove of the bed operation pipe hanging frame making the outside of the vertical rectangular pipe to be inserted inside of a width control socket groove at the both ends after inserting the horizontal bar groove of the width control socket at the both ends of the width control bar which is combined the width control bar inserting groove of one bed operation pipe hanging frame to be positioned in the center of the width control bar. The operation pipe inserting groove of the bed operation rotating sawtooth is inserted in the bed operation pipe the operation pipe fixing bolt groove to face the outside of the bed operation pipe hanging frame. After fixing by controlling the width control bar the screw thread of the bed operation rotation sawtooth to interlock with the bed operation straight line sawtooth, the vertical recta
