The collection of fog water is a simple and sustainable technology to obtain fresh water as a drinking water source for human and animal consumption.We report a novel kind of fog-collecting device fabricated from metal foam as a three-dimensional extension of biologically inspired 1-D and 2-D materials.Such network structure proved to be effective in increasing the contact area and the interaction time of the skeleton and fog compared to traditional 2-D fog-collecting material.The inertial centrifugal force generated by a rotating metal foam and the different surface wettability were mainly included in the research aspects of the fogcollecting performance.This research not only focuses on the application of metal foam in the fog collection,but also provides a design method of such material used in the liquid-gas separation.