Disclosed are an environment-friendly inorganic surface treatment galvanized steel plate and a preparation method and water-based inorganic surface treatment agent of the environment-friendly inorganic surface treatment galvanized steel plate. According to the environment-friendly inorganic surface treatment galvanized steel plate and the preparation method and water-based inorganic surface treatment agent of the environment-friendly inorganic surface treatment galvanized steel plate, progressive die rapid deep-drawing machining in the micro-motor field can be met, and excellent part anti-red-rust performance and surface conductivity are achieved simultaneously. Under an open environment, by coating and curing the water-based inorganic surface treatment agent containing a single organic silane coupling agent containing hydrophobic groups, a system crosslinking agent, water-soluble nano sol, surface modified high-density polyethylene particles, orthosilicate ester modified graphene oxide, a water-soluble fluorinated compound, a water-soluble phosphorous compound, a water-soluble metallic salt compound and the like on the surface of the galvanized steel plate, the obtained inorganicsurface treatment galvanized steel plate has excellent anti-red-rust performance, the surface conductivity, surface lubrication performance and anti-stamping blackening performance, requirements of progressive die rapid deep-drawing machining and bare service can be met, and therefore, the environment-friendly inorganic surface treatment galvanized steel plate and the preparation method and water-based inorganic surface treatment agent of the environment-friendly inorganic surface treatment galvanized steel plate are especially suitable for the field of micromotors.