窗口差法是区域重力资料处理中,提取中深部地质体信息的一种手段。它通过区分三个垂向叠加异常,可以把中深层的信息突出出来。本文在窗口、窗口差滤波一维或二维公式理论推导的基础上,讨论了最佳窗口的选择办法。并以泛东北地区的使用结果说明了方法的有效性。 The window difference method is a means of extracting the information of deep geological bodies in regional gravity data processing. It distinguishes between the three vertical superimposed anomalies, which can highlight the middle and deep information. Based on the deduction of one-dimensional or two-dimensional formula of window and window difference filtering, this paper discusses the optimal window selection method. The results of the use of the Pan-Northeast region illustrate the effectiveness of the method.