Highly connective network of electromagnetic materials is greatly benefit for high-performance electromagnetic radiation elimination. In this work, we constructed an three-dimensional (3D) electromagnetic network using multi-walled carbon nanotubes (MCNTs) as wires and metal organic frameworks (MOFs) as junctions. After treating the networks by calcination at 500 degrees C under argon atmosphere, a 3D Co/C-MCNTs hybrid network formed and displayed excellent electromagnetic waves absorption (EWA) performance. The enhanced mechanism of the network structure was thoroughly explored and analyzed. This research provides valuable guidance to the design of high-performance EWA materials as well as novel MOFs based hybrids. (C) 2018 Elsevier B.V. All rights reserved.