The invention provides an angle regulator for a J-type pipe laying tower, which comprises connecting parts, a supporting part formed by an upper supporting body and a lower supporting body and a regulating part. Both ends of the regulating part are respectively connected with one ends of the upper supporting body and the lower supporting body of the supporting part; one connecting part is arranged at the other end of the upper supporting body, which is deviated from the regulating part; the one connecting part is connected with the lateral surface of a main body tower; another connecting part is arranged at the other end of the lower supporting body, which is deviated from the regulating part; the another connecting part is hinged with a deck; the connecting parts are respectively hinged with the tower and the deck of a hull; the supporting part is of an embedded telescopic structure; and the regulating part adopts a hydraulic cylinder driving mechanism for implementing extension and retraction of the supporting part so as to complete regulation of the angle of the J-type pipe laying tower. The angle regulator for the J-type pipe laying tower has the effects of simple structure and reliability for regulating the angle.