介绍了一种适合于非网格化样品点研究区域的插值方法——多重二次曲面函数插值法 .这种方法运用二次基本曲面函数作为插值的基函数 ,数学方法简单 ,易于编程实现 .该方法对原始数据的边界和分布情况要求不高 ,适合于处理分散的和非网格化的数据 .将该方法引入煤层地质曲面逼近 ,效果良好 An interpolation method suitable for non-meshing sample points research area - multiple quadric surface function interpolation method is introduced, which uses the second basic surface function as interpolation basis function, and the mathematical method is simple and easy to program. This method is less demanding on the boundary and distribution of the original data, and is suitable for dealing with scattered and non-meshing data. This method is introduced into the coal seam geological surface approximation, the effect is good