本文研制了适合偏滤器位形的１－１／２维托卡马克输运程序（ＴＤＴＲ），并用该程序模拟了托卡马克装置放电期间（等离子体电流平顶段）偏滤器位形的演化。在纯欧姆加热和有辅助加热两种放电方式下，对不同等离子体电流分布、拉长比、三角形变等参数下等离子体平衡位形的演化过程进行了计算机模拟。结果表明，初始电流分布较平坦时，Ｘ点的位置几乎不随时间变化；对中心峰化的电流分布，偏滤器位形只能维持０．３—０．４ｓ。 In this paper, a 1-1 / 2-Vitalka transport program (TDTR) suitable for divertor configuration has been developed and used to simulate the evolution of the divertor configuration during the tokamak discharge (plasma current flat top) . Under pure ohmic heating and assisted heating, the evolution of plasma equilibrium configuration under different plasma current distribution, elongation ratio, triangular deformation and other parameters were simulated. The results show that when the initial current distribution is flat, the position of X point almost does not change with time; for the center of the peak current distribution, divertor configuration can only maintain 0.3-0.4s.