The drilling-hole deviation problem is explored through theoretical and numerical analysis. First,the finite element modeling to different deviation (zero to half of hole radium) established and relatively dispalcement fields are obtained. Then,the correlation of deviation value and mean diaplacement error( MDE) is developed. When the deviation is located at 0. 2 level,the MDE components at radical and circumferential direction is less than 15% and 10% respectively,when it is located at 0.4 level,the relatively error will exceed to 30% and 25% ,if it is exceed to 0.5 level,the present law is invalidated and had to be improved.%将有限元数值法与解析解相结合,对载荷下探头钻孔偏心问题进行研究.研究结果表明,偏移量δ≤1/5时,径向位移误差均值＜15％,周向位移误差均值＜10％；偏移量δ≥2/5时,径向位移误差均值＞30％,周向位移＞25％；而当δ＞1/2时,误差值更大,具体的数值在实际工程中需进一步验证.
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