In many parts of the mechanical engineering the lightweight construction has an application area. For those applications metal foam has interesting properties like low density and high energy absorption, which create the conditions for a usage at lightweight constructions. The object of this work is the production of CNT-reinforced aluminium foam. Therefore the good properties of metal foams and carbo-nanotubes are combined and new and better properties are created. The production of the foams was done by using the powder metallurgy process. First the powders were milled in a ball mill for different times. For analyzing the different powder mixes a metallographic analytic was done. The milled powders are pressed to pellets. The pellets have been analyzed by looking at cracks, particle composition and particle size to find dependencies between this and the foaming properties. Analysis about the structure, the pore structure and the expansionary of the aluminium foam are done. The distribution of the CNT in the foam was analyzed. The results are compared and the tending effects are shown. Finally a conclusion of the effects of the different parameters regarding to the aluminium foam is given.