Electromagnetic shielding glass is an important application material in the fields of national defense and people’s livelihood. However, it is difficult to synchronously improve the electromagnetic and optical properties of the electromagnetic shielding glass. Ultra-thin metal based transparent electromagnetic shielding film is a common functional material in the field of electromagnetic shielding glass. In this paper, the shielding design principle of ultra-thin metal based transparent electromagnetic shielding glass is described in detail. The methods of reducing the threshold thickness of ultra-thin metal film are reviewed. The optical and electromagnetic shielding properties of ultra-thin metal based electromagnetic shielding glass with different structures in recent years are reviewed. The future development trend of electromagnetic shielding glass is discussed.