The invention relates to the technical field of solar photovoltaic glass and provides an antireflective coating solution, which comprises the following components in percentage by volume: 80.0-95.0% of silicon dioxide sol, 0.1-8.0% of titanium dioxide sol, 0.1-5.0% of zirconium dioxide sol, 0-3.0% of cerium dioxide and / or magnesium oxide and / or aluminum oxide sol, 0.1-3.6% of stabilizer, 0.1-3.8% of surface finishing agent, 0-8.0% of volatilization control agent, and 0.2-4.5% of processing assistants. The invention also provides a preparation method of the antireflective coating solution, photovoltaic glass prepared by adopting the antireflective coating solution, and a preparation method of the photovoltaic glass.