A new criterion to the unique steady state of the nonlinear nonautonomous circuits in decomposition forms is obtained ,which are expressed by the stability of the decomposed matrixes.

• 利用矩阵分解方法，得到了确定高维非线性非自治电路唯一稳态的新条件。结果表明，非线性非自治电路的唯一稳态，可以用分解矩阵的稳定性来决定。