Preparation method of electromagnetic shielding grid, and electromagnetic shielding film

The invention provides a preparation method of an electromagnetic shielding grid, and an electromagnetic shielding film. The preparation method of the electromagnetic shielding grid comprises the following steps: coating a photoresist on the surface of one side of a transparent substrate; forming a pattern on the surface of the photoresist through exposure and development; evaporating a metal layer on the surface of the photoresist after the pattern is formed; soaking the transparent substrate evaporated with the metal layer in an N-methylpyrrolidone solution to remove the metal layer on the surface of the photoresist, and retaining the metal layer on the surface of the pattern to obtain a prefabricated electromagnetic shielding grid; and electrically depositing Au on the surface of the prefabricated electromagnetic shielding layer through pulse electroplating to obtain the electromagnetic shielding grid. According to the electromagnetic shielding grid, the effect of a formed pattern can be better, the overal