The invention discloses a preparation method for a gel storage battery. The preparation method comprises the following steps of (1) preparing a gel electrolyte: preparing the gel electrolyte from 1-3 parts by weight of silica sol, 2-3 parts by weight of distilled water, 4-7 parts by weight of sulfuric acid and 5-7 parts by weight of a solid substance; (2) performing filling; and (3) performing charging and discharging: after a battery is stood for 2-3 hours, performing charging, wherein a charging current is small at the beginning, and charging time is prolonged, thereby preventing excessive bubbles from being generated and enabling the gel electrolyte to overflow; a constant-current method is selected and used for charging, so that the charging current can be arbitrarily selected; and a resistance method is selected and used for discharging, and variable resistance can be used for adjusting a discharging current. The gel storage battery prepared with the method is long in service life, reasonable in gel electrolyte ratio and relatively large in battery capacity.