This study was designed to evaluate the anticancer activity of Ziziphus mauritiana roots. The dichloromethane and methanol extracts were prepared and anticancer activity was investigated the by using MTT assay. Human breast cancer cell line (MCF-7) was used in this study. 50μg/ml of dichloromethane extract of the roots of plant exhibited significant anticancer activity (70%) against the breast cancer cell line with IC₅₀ 20.34±0.9 using doxorubicin as standard. The study indicated that Ziziphus mauritiana has anticancer activity against MCF-7 cell line.