In this paper,two new methods of estimating are given and proved for the upper and lower bounds on the spectral radius of a nonnegative matrix,which is based on two special matrices.

• 借助两个新的矩阵得到非负矩阵谱半径的两个新估计及其证明,并通过实例与以往的结论作比较,验证了这些估计的有效性及精确度。