Abstract: In this paper, the problem of BIBO stabilization for nonlinear systems of uncertain parameters with time-delay is discussed. Based on the variation of parameters, Liapunov function and the inequality analysis, the sufficient conditions of BIBO stabilization for nonlinear systems of uncertain parameters with time-delay are obtained. The exponential stability and the asymptotic stability for such systems are also given. The conditions are obtained by extending the results of some related references.