摘要:Exact and explicit solitary wave solutions of a (2 +1)-dimensional Broer-Kaup equation, which contains three arbitrary functions ,are obtained by using the extended homogeneous balance method that is very simply and directly.%利用扩展齐次平衡法,求出了包含三个任意函数的(2+1)维Broer-Kaup方程的精确孤子解,所用方法简单、直接,并可推广到其它非线性方程(组).