On the basis of basic concepts and related definition of binary interval number ,the new oper-ation and properties of interval numbers are studied .And then the definition of group ,matrix ,adjacency matrix eigenvalue and their relatived properties in the interval numbers are given ,according to the group , matrix and the characteristic value calculation methods of classical mathematics .%在二元区间数基本概念和相关定义的基础上,研究了区间数的新的运算和性质。根据经典数学中的群,矩阵和特征值求法,研究了区间数中的群,矩阵,以及邻接矩阵求特征值算法并给出了性质证明。
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