The invention relates to an electroplating molten metal, in particular to an electroplating aluminum liquid. The electroplating aluminum liquid comprises the following components: organic solution, triethyl aluminium and 0.01 to 8 percent of an addition agent. The addition agent adopts 0.01 to 8 percent of an inorganic addition agent, and 0.01 to 8 percent of an organic addition agent. The electroplating aluminum liquid replaces the former triethyl aluminium electroplating aluminum liquid, and solves the problems of the former triethyl aluminium electroplating aluminum liquid that the efficiency is extremely low and the energy consumption is high, and the electroplating aluminum liquid has the advantages of stable solution, quick film coating speed, good film layer and low cost.