Using pure aluminum as the matrix material, TiH2 as the foaming agent and copper-plated glass fiber as the additive, foamed aluminum with different porosity was prepared. The influence of glass fiber content and aspect ratio on the porosity, apparent density, compressive strength and thermal conductivity of aluminum foam was studied. The results show that when the amount of foaming agent remains unchanged, with the increase of the glass fiber content and the aspect ratio, the porosity of the foamed aluminum increases, and the apparent density, thermal conductivity and compressive strength are correspondingly reduced; but the fiber length The influence of diameter ratio is smaller than that of fiber content.