We proposed the concepts of digital coding metamaterial and metasurface, in which the meta-atoms are represented by using digital states of phases. The digital representation of metamaterial and metasurface makes it possible to manipulate the electromagnetic waves and modulate the digital information simultaneously on the same platform, evolving a new direction of information metamaterial and metasurface. The information metasurfaces set up a bridge between the physical world and the digital world. Integrated with field programmable gate array (FPGA), the information metasurfaces can control the electromagnetic waves and process the digital information in real time and programmable way. Based on the information metasurfaces, new-architecture microwave imaging and wireless communication systems have been designed and realized, showing great potentials in the next-generation wireless applications.