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Soil polycyclic aromatic hydrocarbons (PAHs) and cadmium (Cd) pollution poses severe threats to environment security. Previous studies have reported that both nanoparticles and humic acid (HA) have ability to phytoremediate of pyrene/Cd in soil. Here, pot experiments were conducted to investigate the effects of TiO2NPs and humic acid addition on the applicability Hylotelephium spectabile of remediation for pyrene-Cd co-contaminated soil and the corresponding plant growth. The results show that TiO2NPs with HA can mitigate the damage to plant physiology. TiO2NPs-HA is more suitable to be applied on composite soil where Cd pollution is dominant and pyrene pollution is light. Furthermore, the coating of TiO2NPs with HA enhances the availability of Cd and expands root xylem, allowing roots to absorb and accumulate Cd in large quantities finally. This study aims to establish a theoretical foundation for the implementation of sedum plant in remediating soil contaminated with multiple pollutants.

来源平台：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING