本文建立了不考虑及考虑井筒储存和表皮效应影响时的均质各向异性油藏水平井的渗流数学模型，在利用特征函数、有限积分变换结合拉氏变换等方法获得了这些数学模型的解后，利用数值积分和数字反演方法作出了适用于水平井试井分析的压力及压力导数型曲线，并导出了水平井早期和晚期流动的压降近似表达式，为水平井试井分析提供了理论依据。 In this paper, a mathematic model of seepage in a horizontal well with homogeneous anisotropy without consideration of and consideration of wellbore storage and skin effect is established. The solutions of these mathematical models are obtained by means of eigenfunction, finite integral transformation and Laplace transform After that, the pressure and pressure derivative curves suitable for horizontal well test analysis were made by numerical integration and numerical inversion method. The approximate expression of pressure drop in early and late horizontal wells was derived, which provided a good example for horizontal well test analysis The theoretical basis.