Preparation method of coated glass, coated glass and glass assembly

The invention provides a preparation method of coated glass, the coated glass and a glass assembly.The preparation method of the coated glass comprises the steps that a to-be-treated piece is taken, the to-be-treated piece comprises plate glass and a silver-based film layer covering the surface of the plate glass, and the silver-based film layer is made of metal silver; and the to-be-treated part is subjected to heat treatment, the silver-based film layer is subjected to heat treatment to form a film coating layer, the heat treatment temperature ranges from 300 DEG C to 650 DEG C, the heating rate of heat treatment is larger than or equal to 3 DEG C/s, and the heat treatment time is larger than or equal to 50 seconds. The coated glass obtained by the preparation method is not easy to oxidize and long in storage time, so that the functionality of the coated glass is ensured, and the cross-regional transportation and production of the coated glass can be realized. 本申请提供一种覆膜玻璃的制备方法、覆膜玻璃和玻璃组件，覆膜玻璃的制备方法包括：取待处理件，待处