PURPOSE: Provided is a cultivation structure for growing sea products which is installed under the sea and is used semi permanently. The structure is not polluting and environment friendly, mass producing unpolluted sea products. CONSTITUTION: The structure comprises: several horizontal tubes which bond the packings(113) to connect strings with shellfish shells hung on them; several assemblies(101) which have side inserting part(103) perpendicular to the horizontal tubes(111) and bottom insertion part(104) at the bottom part; several support tubes(121) which support the assemblies(101) by the bus(105) inserted into the bottom inserting part(104) of the assemblies(101); several top sockets(131) having vertical tube(141) insert parts at the bottom parts; a fixing bolt(134) which bolts the vertical insert part(133) of the top sockets(131) with the top part and several vertical tubes(141) at the bottom part which are buried into the soil of foreshore; bottom sockets(151) which connect the vertical tube to the ver
