The invention discloses a combined titanium anode for hexavalent chromium electroplating. The combined titanium anode comprises a titanium base noble metal oxide anode and a titanium base base metal oxide anode arranged on a conducting bar; a titanium base noble metal oxide anode coating layer consists of Ta2O5, IrO2-Ta2O5, IrO2-Ta2O5-SnO2 and IrO2-SnO2 from inside to outside; and a titanium base base metal oxide anode coating layer is PANI-doped PbO2. A preparation method of the combined titanium anode for hexavalent chromium electroplating comprises the following steps: the coating layers are firstly prepared for the titanium base noble metal oxide anode and the titanium base base metal oxide anode, and are combined to obtain the combined titanium anode. The combined titanium anode is high in electrocatalytic activity and corrosion resistance, can work under high current density in the hexavalent chromium electroplating production, generates no anode mud, and is long in service life.