AB glue with a high-refractive-index ultrathin intermediate bonding layer comprises the high-refractive-index ultrathin intermediate bonding layer, wherein a low-viscosity silica gel layer is adheredto the upper surface of the intermediate bonding layer, a high-viscosity glue layer is attached to the lower surface of the intermediate bonding layer, an organic silicon release film is attached to the lower surface of the high-viscosity glue layer, and a pretreatment PET film is attached to the upper surface of the low-viscosity silica gel layer; the high-refractive-index ultrathin intermediatebonding layer is formed by introducing inorganic nanoparticles with high refractive index into an organic coating with high refractive index, coating the high-viscosity glue layer with the organic coating, and the intermediate bonding layer with both hardness and high transmittance is obtained. According to the AB glue with the high-refractive-index ultrathin intermediate bonding layer, during use, the organic silicon release film is torn off, the high-viscosity glue layer is adhered to tempered glass and tightly adhered to the glass; the pretreatment PET film is torn off, and the silica gel layer is adhered to a display screen; the silica gel layer has rapid exhaust effect and good adhering effect due to low viscosity and low surface energy; the tempered glass is adhered to the screen ofa mobile terminal such as a mobile phone by the AB glue, so that the screen of the mobile terminal product is protected from being scratched, and surface impact resistance of the mobile terminal product is improved. Compared with traditional AB glue, the AB glue has the advantages of being high in light transmittance, high in refractive index, good in flexibility, good in adaptability to non-planar display screens, simple to use, good in weatherability and easy to rework.