The invention provides a hydrophilic biological carrier for wastewater treatment. The hydrophilic biological carrier comprises base materials, hydrophilic functional materials and auxiliary materials, the base materials include high-density polyethylene, the hydrophilic functional materials include iron trioxide, coke and slag powder or polyvinyl alcohol, and the auxiliary materials include talcum powder. The density of the hydrophilic biological carrier for wastewater treatment is 0.93-1.05g/cm<3>, the biological carrier is rough in surface, large in specific surface area, short in membrane hanging time and high in impact resistance, can prevent microbial membranes attached to the outer surface of the carrier from falling off due to friction between the carriers in water, contact angles of sewage and the carrier are reduced, the hydrophilicity of the carrier is improved, so that microorganisms are more easily attached to the carrier, the biological carrier is provided with enhanced components of biological enzyme, the catalytic action of the biological enzyme is facilitated, the enhanced components are high in biological activity and fast in metabolism, the decomposition capacity of contamination in the water can be remarkably improved, the biological carrier contains ultraviolet-resistant components, the service life of the biological carrier is longer than 30 years, and replacement and maintenance are omitted.