A shipboard helicopter stabilized platform is characterized in that three ball sockets of the lower surface of a dynamic platform are matched with a sphere at the upper ends of leveling rods to form S pairs, and the lower ends of the leveling rods are arranged in leveling hydraulic cylinders to form P pairs; the lower ends of the leveling hydraulic cylinders are connected with a base support bottom ring through a cross shaft; two supports are fixed to a base support, and two outer shafts of a cross hinge sleeve are arranged in two shaft sleeves at the upper end of the base support; two outer shafts of a center hydraulic cylinder are arranged in two through holes of the cross hinge sleeve arranged on the upper portion of the center hydraulic cylinder in a sleeving mode to form P pairs; a ball socket is arranged at the upper end of a center supporting rod, and the ball socket is matched with a ball on the lower portion of the dynamic platform to form an S pair; a ball is arranged at the lower end of the center hydraulic cylinder, the ball is connected with one ends of two angle hydraulic cylinders respectively through a connection assembly, the other ends of the two angle hydraulic cylinders are connected to the inner annular face of the base support bottom ring, and the included angle between the axes of the two angle hydraulic cylinders is 90 degrees. By means of the shipboard helicopter stabilized platform, a shipboard helicopter can take off and land safely under large winds and waves, and meanwhile the safety of the shipboard helicopter and a ship can also be guaranteed.