The invention relates to a titanium-aluminum-copper composite material and a preparing method thereof, and belongs to the technical field of composite material manufacturing. The titanium-aluminum-copper composite material comprises a titanium layer, an aluminum layer and a copper layer, all of which are sequentially arranged. The titanium-aluminum-copper composite material preparing method comprises the following steps that a titanium plate and a copper plate are arranged in a spaced manner, a gap is formed between the titanium plate and the copper plate, molten aluminum is poured into the gap between the titanium plate and the copper plate, rolling is conducted, and then the titanium-aluminum-copper composite material is obtained. The titanium-aluminum-copper composite material integrates the performance of three metals including the titanium, the aluminum and the copper, the aluminum replaces the copper, the titanium is saved through the aluminum, and the advantages of high electricconductivity, high heat conductivity, corrosion resistance, low cost and the like of a titanium-aluminum-copper composite plate can be shown.