An all-in-one water-borne inorganic-organic hybrid architectural coating and a method for preparing same. The all-in-one water-borne inorganic-organic hybrid architectural coating is prepared by taking a compounded product of a silica sol, silicate water-borne inorganic film-forming matter and an organic polymer emulsion as a base material through the steps of adding various pigments/fillers and auxiliaries into the base material, then carrying out beating, grinding and paint mixing on the obtained mixture. The coating has various functions such as environmental friendliness, non-toxicity, thermal insulation, ultra scrubbing resistance, abrasion resistance, yellowing resistance, ageing resistance, fouling resistance, good air permeability, and sound insulation.