The invention discloses a preparation method for conductive glass. The method comprises the following steps: firstly, pretreating a glass substrate by utilizing hydrofluoric acid; and secondly, coating a silicon-contained intermediate layer on the glass substrate with tetraethoxysilane (TEOS) and a silane coupling agent as precursors, glacial acetic acid as a catalyst and ethanol as a solvent, carrying out drying, then coating an indium-and-tin contained conductive sol on the surface of the glass substrate, carrying out gelatinization at room temperature, and carrying out annealing in superheated steam of 450 to 550 DEG C for 1.5 to 2 hours so as to obtain the conductive glass with high transparency. The preparation method for the conductive glass provided by the invention has simple process; the prepared conductive glass has good binding strength between a conductive layer and the glass substrate; and the surface of the conductive layer is smooth.