Ultra thin two-dimensional (2D) materials (including layered and non layered structures) are expected to become electrocatalysts. Their catalytic performance is limited by their natural electronic structure and 2D stacking. Adjusting the 2D structure with exotic atoms can modify the chemical affinity. Even in metastable states, the surface of 2D materials is not sufficient for simple chemical modification to enhance catalytic activity and diversify catalytic reactions. Differently, emerging ultra-thin 2D amorphous metastable materials lack phase structure and exhibit high activity and abundant dangling bond states. This material may provide a solution to the aforementioned challenges faced by traditional 2D materials. This report discusses ultra-thin 2D amorphous metastable materials as an ideal platform to break the limitations of traditional 2D materials in electrocatalysis, and proposes how to develop these materials to achieve more promising electrocatalysis. The potential stability, manufacturing, and challenges of these materials were also discussed to provide guidance in key areas.