The scarcity of energy and environmental issues caused by fossil fuels seriously affect human development, making it imperative to develop new green energy storage and conversion technologies. Water splitting and rechargeable metal-air batteries have broad application prospects, but their development is limited by the slow rate of the Oxygen evolution reaction (OER). Introducing catalysts can accelerate OER and reduce the overpotential required for the reaction. While most work on catalyst modification focuses on the catalyst itself, some works have achieved this through the assistance of external fields, such as magnetic, electric, and photo fields. The application of thermal fields can be traced back to earlier and has a wider range of applications. However, when it comes to the role of thermal, it is generally believed that thermal change the organization or phase of materials during the synthesis process, as seen in the typical heat treatment of steel. It is also commonly believed that the higher the temperature, the more effective molecular collisions, which accelerates the reaction rate. While this is correct, it is not comprehensive. This review combines the latest work on the application of thermal energy to OER, providing a comprehensive analysis of the contribution of thermal energy to accelerating OER, including its role in the synthesis process, the photothermal effect, and other aspects. It specifically discusses the impact of temperature-induced bubbles on OER rates and whether the continuous increase in temperature will lead to an unrestricted increase in reaction rates. Additionally, the review provides some considerations for the application of thermal energy to OER and prospects for the development of this field.