A chaotic time series is extracted from a two-order driven electronic system

and a chaotic attrator is made by the reconstructing technique of 2-dimension time delays. A dynamical criterion which can verify the quality of reconstructing attractor is proposed

and the main idea is estimating some dynamic characteristics such as generalized dimensions Do （or/and the scaling spectrum of the singularities）

Lyapunov exponents and metric entropy from the original phase portrait and that of the recovery trajectory

respectively. The results show good consistency between the reconstructing attrator and the numerical simulation trajectory of the system in both quality and quantity.