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介绍了微组装热分析软件（ＭＣＡＴＡ）的热模型和数值算法，提出将环境作为一个网格节点，使热传输的三种形式及边界条件能用统一的离散化方程表示，并讨论了热传导方程离散化的原则及界面导热系数的计算方法，最后给出了计算实例。
The thermal model and numerical algorithm of MCATA are introduced and the environment is taken as a grid node. The three forms of heat transfer and the boundary conditions can be represented by a unified discretization equation. The heat conduction equation The principle of discretization and the method of calculating the thermal conductivity of the interface. Finally, a calculation example is given.