The invention discloses a method used for preparing a foaming aluminum 
alloy special form part with an even hole structure. The method comprises the following steps: firstly, aluminum 
alloy is warmed up to melt, 
titanium hydride is added, the mixing is performed to lead the 
titanium hydride to being deconcentrated, and then 
calcium is added to aluminum 
alloy solution, to be mixed and to add the 
viscosity of molten 
mass, the molten 
mass after being mixed is cooled down, and a fabricated part is obtained; secondly, the fabricated part is put in a die 
assembly, and heated and warmed up, and insulated at temperature, to lead the foaming aluminum alloy fabricated part to perform secondary foaming in the die 
assembly, foaming aluminum alloy after foaming is cooled down, to obtain a foaming aluminum alloy product. Before 
warming up to the secondary foaming in the second step, the primary foaming aluminum alloy fabricated part and the die 
assembly are firstly preheated and insulated. Before adding 
viscosity agent 
calcium, the 
titanium hydride is added firstly, the 
viscosity of the aluminum alloy solution is lower, and the invention is in favor of the 
titanium hydride being uniformly dispersed in the aluminum alloy molten 
mass within the shortest time, and in favor of preparing the large sized foaming aluminum alloy special form part with the even hole structure.