Abstract: A net cascade with two withdraws named as matched abundance ratio net cascade was proposed. The upper part is an ideal net cascade, and the lower part is a net cascade with recirculation. If the separation of two key components is symmetrical, their abundances will not mix at inflow points. The computation method of the matched abundance ratio net cascade was given, and the separation performance was discussed through separating multi-component isotope mixtures in different cases. The results show that the matched abundance ratio net cascade can separate mixtures well, and its separation performance is no less than conventional matched abundance ratio cascade in case of same total flows.