Metamaterials offer a powerful way to manipulate a variety of physical fields ranging from wave fields (electromagnetic field, acoustic field, elastic wave, etc.), static fields (static magnetic field, static electric field) to diffusive fields (thermal field, diffusive mass). However, the relevant reports and studies are usually conducted on a single physical field or functionality. In this study, we proposed and experimentally demonstrated a bifunctional metamaterial which can manipulate thermal and electric fields simultaneously and independently. Specifically, a composite with independently controllable thermal and electric conductivity was introduced, on the basis of which a bifunctional device capable of shielding thermal flux and concentrating electric current simultaneously was designed, fabricated and characterized. This work provides an encouraging example of metamaterials transcending their natural limitations, which offers a promising future in building a broad platform for manipulation of multi-physics field.Usually, the realization of physical functionality means to manipulate and control the relevant physical fields in a desired way. To accomplish such a goal, various structures and geometries are designed based on available materials. However, the capacity and functional diversity are usually limited by the material it is made of. As a result, some desirable properties seem impossible to achieve with materials available at present. For example, a material with independently controllable thermal and electric conductivity is difficult to come 2 by. Once such material becomes available, numerous intriguing possibilities will be opened up and myriad novel applications will find their way into our life.The rapid development of metamaterials is beginning to bring such a bright future ever closer to us. Metamaterials actually are composites consisting of well-arranged subwavelength inclusions that can be considered as "effective" material. Compared with conventional materials which are synthesized at the molecular level, the novel conception of metamaterials are capable of tailoring material properties at a subwavelength level. What is more interesting, metamaterials derive their properties not from materials used in the process of fabrication, but from their designed structures. With all these novelties, metamaterials possess numerous exotic properties and promise many applications. Over the past years, metamaterials were widely used in manipulation of physical fields ranging from electromagnetic wave, [1][2][3] acoustic wave, [4] elastic wave [5] to matter wave. [6] Recently, metamaterial was introduced to control fields such as static magnetic field, [7][8][9][10][11] dc electric field, [12][13][14] thermal field, [15,16] electrostatic field [17] and diffusive field. [19][20] However, bifunctional or multifunctional metamaterials are rarely reported and studied. It is interesting to explore the possibility of creating novel metamaterials to achieve independently controllable thermal and electric cond...