In manufacturing industry of ship hull plate,it is very complex to make the steel plate into the outer plate curved surface conform to ship manufacturing because the ship hull outside surface is mostly composed of complex and non-de-velopable space curved surface. According to NURBS spline surface characteristics,the corresponding hull plate type value ta-ble was made with NURBS three-time spline interpolation function method and curve surface fitting method. Taking the hull plate of a shipyard as an example,Auto CAD software was used to conduct the curve and curved surface fitting,and the fitting hull plate surface conform to ship hull plate manufacturing was achieved.%在船体外板的制造业中，由于各种船体的外表面大都是由复杂的不可展空间曲面构成，把钢板加工成符合船体制造的外板曲面非常复杂。在此基于NURBS样条曲面的特点，采用NURBS三次样条插值函数方法，经过对曲线曲面拟合方法建立相应的船体外板型值表，以某船厂船体外板为例，通过Auto CAD软件，进行了曲线、曲面的拟合，得到了符合船板制造的拟合外板曲面。
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