[Objective] To investigate the effect of applying Pteroceltis tatarinowii biochar on the remediation of Cu, Pb complex contaminated soil by Chlorophytum comosum. [Methods] Taking the Cu and Pb complex contaminated farmland soil around the copper tailings in Laoyaling, Tongling City as the research object, pot planting test method was used to set up the Chlorophytum comosum pot experiment with different mass ratios of Pteroceltis tatarinowii biochar (1%, 3%, 5%, 7% and 10%). The treatment without adding Pteroceltis tatarinowii biochar was taken as the blank group, and the treatment without planting Chlorophytum comosum was set as the control group. The effects of different mass ratios of Pteroceltis tatarinowii biochar on remediation of Cu and Pb contaminated soil were studied, and the potential of Pteroceltis tatarinowii biochar strengthening remediation of Cu and Pb contaminated soil was evaluated. [Results] The plant height, root length and underground fresh weight of Chlorophytum comosum were significantly increased by adding Pteroceltis tatarinowii biochar. Soil pH, organic matter, total nitrogen, available phosphorus and available potassium were significantly increased. The mass fraction of available Cu and Pb in soil was significantly decreased, and the absorption amount of Cu and Pb was significantly increased. The maximum absorption amount of Cu and Pb in the above and underground parts increased by 51.39%, 15.62%, 115.10%, 99.34%, respectively. The maximum enrichment and transfer coefficients of Cu and Pb were 0.61, 0.40 and 0.37, 0.68, respectively. The relative abundances of Acidobacteria and Proteobacteria were decreased, and the relative abundances of chloromycetes and Bacteroidetes were increased. and the soil nutrient metabolism was promoted. [Conclusion] The combined application of Pteroceltis tatarinowii and Chlorophytum comosum has better remediation effect.