<p>Heavy metals are widespread toxic environmental pollutants that are potentially harmful to human health. Magnetic biochar is widely used for remediation of heavy metal pollution due to its high porosity, large specific surface area and easy recycling. Due to the drawbacks of conventional magnetic biochar's limited adsorption capacity for single heavy metals, poor stability, uneven metal distribution, and ease of dissolution, the researchers developed bimetallic magnetic biochar (BMB), a new type of environmentally friendly functional material. This innovative material combines magnetic components with synergistic effects of dual metals, offering an efficient and sustainable solution for heavy metal pollution remediation. In this paper, (i) various BMB preparation methods and their characteristics are reviewed; (ii) the adsorption mechanisms of BMB on different heavy metal contaminations are presented; and (iii) the reasons of how BMB can further enhance the separation of heavy metals are discussed, as well as the decrease of adsorption capacity after recycling and regeneration are analyzed. It aims to help people better understand the practical significance of the application of bimetallic magnetic biochar materials in heavy metal remediation.</p>