Drilling cuttings are a type of solid waste generated in drilling engineering， usually treated with cement for solidification. However， the production process of cement is accompanied by a large amount of carbon dioxide emissions， which not only increases greenhouse gas emissions but also has adverse effects on environmental protection. In response to the above situation， this article proposes a new method of microbial induced magnesium carbonate precipitation and solidification of drilling cuttings. The study on the mechanical properties of microbial induced magnesium carbonate precipitation solidified drilling cuttings shows that the strength of the solidified body decreases with the increase of water content and urea concentration， and increases with the increase of active magnesium oxide concentration and curing time. The minimum strength is 0.21MPa and the maximum strength is 3.5MPa， fully demonstrating the importance of selecting the most suitable ratio. The characterization results of FTIR， XRD， and SEM showed that the microbial induced precipitation products of magnesium carbonate were rose shaped magnesite （4MgCO₃?Mg（OH）₂?4H₂O） and needle shaped magnesite （MgCO₃?3H₂O）； The product uses a dense carbonate network structure to bond loose particles into a structurally intact solidified body， thereby elucidating the mechanism of microbial induced magnesium carbonate precipitation and solidification of drilling cuttings.