NOVELTY - Preparation of self-cleaning synergistic solar coating comprises preparing titanium sol by adding anhydrous ethyl alcohol with hydrochloric acid or glacial acetic acid to adjust pH, stirring, adding acetylacetone, continuously stirring, adding butyl titanate, mixing, adding water, and stirring; preparing silicon-titanium composite sol comprising mixing neutral silica sol with titanium sol and stirring; adding film-forming auxiliary agent; and stirring to mix uniformly.    USE - Preparation of self-cleaning synergistic solar coating for use on solar photovoltaic power plate surface (claimed).    ADVANTAGE - The self-cleaning synergistic solar coating has thin film contact angle of 2.1-15 degrees , good photocatalytic performance, good hydrophilic and anti-fog properties, good self-cleaning function, and improved antifouling effect; forms very stable film; improves the solar photovoltaic panel power generation efficiency by more than 2.5%; reduces the production and management cost; and is suitable for industrial production.    DETAILED DESCRIPTION - Preparation of self-cleaning synergistic solar coating comprises preparing titanium sol by adding anhydrous ethyl alcohol with hydrochloric acid or glacial acetic acid at 5-40 degrees C to adjust pH at 2.0-4.5, stirring for 10-30 minutes, adding acetylacetone (0.02-1 vol.% based on the volume of anhydrous ethyl alcohol), continuously stirring for 10-30 minutes, adding butyl titanate (2-10 vol.% based on the volume of anhydrous ethyl alcohol), mixing for 10-20 minutes, adding water (2-10 vol.% based on the volume of anhydrous ethyl alcohol), and stirring for 20-40 minutes to obtain colorless and transparent titanium sol; preparing silicon-titanium composite sol comprising mixing neutral silica sol with titanium sol at titanium dioxide (TiO2) and silicon dioxide (SiO2) mass ratio of 0.25-1.5:1, stirring for 1.5-2.5 hours, and obtaining colorless transparent silicon-titanium composite sol; adding film-forming auxiliary agent (1-5 vol.% based on volume of anhydrous ethyl alcohol); stirring to mix uniformly; and obtaining self-cleaning synergistic solar coating. An INDEPENDENT CLAIM is included for application of self-cleaning synergistic solar coating on solar photovoltaic power plate surface.