Modified biochar prepared by ball milling mechanochemical technology has the advantages of low cost, high productivity, green solvent-free and so on. It has been widely concerned by researchers in recent years. Ball milling modification can increase the surface functional groups, expand the specific surface area and improve the adsorption capacity. It makes biochar have excellent removal performance for environmental pollutants and broad application prospect in the field of environmental remediation. This paper introduces the preparation and physicochemical characteristics of ball milling modified biochar, summarizes the latest progress of ball milling modified biochar in the removal of pollutants in environmental remediation, and defines its removal mechanism of various pollutants. On this basis, the existing problems and limiting factors of ball milling modified biochar in environmental remediation are discussed. The future research directions are put forward from the aspects of clarifying the economic and technical feasibility, expanding the application scope of materials, clarifying the potential ecological and environmental risks, to provide reference for the basic scientific research and application technology development of ball milling modified biochar.