nanostructures for biomedical applications. Herein, we report a facile strategy for construction of branchedantisense DNA and small interfering RNA (siRNA) co‐assemblednanoplatform for combinedgenesilencing in vitro and in vivo. In our design, the branchedantisense can efficiently capture siRNA with 3′ overhangs through DNA–RNA hybridization. After being equipped with an active targeting group