本文简单介绍了处理电磁和声学逆散射问题的Ｃｏｔｉｏｎ－Ｍｏｎｋ方法，并将其从二维星形物体情形推广到了非星形物体情形．文中对散射体外形作了更一般的参数化处理，使其适用于任何二维光滑物体．计算机模拟计算表明修改后的方法是有效的，成像结果揭示了这种方法的外形重建效果与所用电磁波频率之间的关系． This article gives a brief introduction of the Cotion-Monk method for solving electromagnetic and acoustic inverse scattering problems, and extends it from the two-dimensional star case to the non-star case. In this paper, the more general parametrization of scatterer shape is made, which makes it suitable for any two-dimensional smooth object. Computer simulation shows that the modified method is effective, and the imaging results reveal the relationship between the shape reconstruction effect of this method and the frequency of the electromagnetic wave used.