The present invention relates to a buoy for fishery, comprising: a first body (10) which includes a space unit on one side, the space unit (11) including a reinforcing unit coated with polyurea material, the reinforcing unit including joining bumps formed on both sides thereof; a second body which is formed symmetrical to the first body, and further includes a space unit, a reinforcing unit, and a joining groove unit, which are formed corresponding to the space unit, reinforcing unit, and joining bump of the first body, wherein the first body and the second body include joining holes on upper parts and lower parts which communicate with the space units; a fixing means which is installed at the joining hole, wherein the fixing means further includes a fixing plate disposed in each of the space units; a fixing cord which is connected to the fixing plate; and a plurality of groove units which are formed on the outer circumference of a buoy which is formed by joining the two bodies. As described above, the body of the buoy is formed using two bodies, each of which is formed through a rapid foaming process and perfectly molded, polyurea-based coating layer is formed inside each of the bodies to increase the strength of each body, each body is provided with a structure which can join with each other, improving the strength and durability of the buoy, increasing the life time of the buoy.
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