As one important supporting component of the ship propulsion system,the waterlubricated stern bearing has great effects on shipping navigation,security,covert,economic and so on.But it is difficult for waterlubricated stern bearing to ensure the good lubrication and smoothness under low speed working conditions.The present situation of the bionic structure application was introduced from the perspective of bionics.The components and surface textures of lignum vitae were analyzed.The mechanism of the selflubricating was explored.The biomimetic materials were preliminary designed and prepared based on the properties of lignum vitae,and the performance of the simple was analyzed to hope a further breakthrough in improving the performance of waterlubricated stern bearing,and provide the idea for wear reduction and the lubrication performance improvement of waterlubricated stern bearing in ship.