Experimental study has been carried out on the seismic performance of SRC-RC transfer columns. The effect of extension length of shape steel has been analyzed. Degeneration of bearing capacity becomes much more obvious when extension length of shape steel increases and failure patterns change from shear failure to bond failure. Displacement ductility changes with increase of the extension length of shape steel, enhancing at first and then reducing, reaching peak value when extension length of shape steel gets close to three-fifths of column height. But extension length of shape steel has little effect on the bearing capacity of transfer column. Although double stirrups are arranged at the location of shape steel discontinuous, strain of stirrup at this position is still much higher than anywhere else.