SY-MOF-1 composites with distinctive structures and properties were successfully synthesized using precursors containing hydroxyl, carboxyl, amino and other functional groups. The effects of SY-MOF-1 composites with different functional groups on lead removal from soil were investigated. The results reveal that surface functional groups, specific surface area and pore structure of the functionalized all composites all change remarkably, providing abundant adsorption sites for lead ions. The functionalized SY-MOF-1 composites were used in the remediation of lead-contaminated soil, and the optimal adsorption conditions were determined as follows:solution pH of 6, reaction temperature of 25 ℃ and reaction time of 20 min. It is found that under such conditions, SY-MOF-1-AMP presents a higher adsorption capacity for lead in soil, reaching 146.5 mg/g. The adsorption process of lead onto functionalized SY-MOF-1 composites conforms to the pseudo-second-order kinetic model and Langmuir isothermal adsorption model, indicating that the adsorption is dominated by chemical adsorption and features monolayer adsorption. The functionalized SY-MOF-1 composites exhibit excellent performance in the remediation of lead-contaminated soil. It can serve as an efficient material and a feasible technical route for the treatment of lead-polluted soil, thus possessing promising application prospects.