The invention discloses a preparation method for calcining low-hydration heat portland cement clinker by using oil-based drilling cuttings, and relates to the technical field of oil-based drilling cuttings processing. The present invention pretreats diesel-based drilling cuttings, mixes limestone, high-iron-aluminum waste rock, pre-treated diesel-based drilling cuttings, and non-ferrous metal slag according to a certain proportion and grinds them uniformly to prepare raw meal, and then feeds the raw meal to Put it into the new dry method rotary kiln, calcined at high temperature, and get clinker after cooling. The present invention can deal with major difficulties that plague oilfield drilling and mining, reduce the natural enrichment of heavy metal ions such as copper, zinc, lead, chromium, mercury, and barium in diesel-based drilling cuttings, and reduce the harm to groundwater and soil; The diesel oil and organic matter in the swarf can provide heat during the calcination process of clinker, which can significantly reduce clinker energy consumption, reduce CO 2 emissions, reduce clinker calcination temperature, significantly increase the output of cement mill and rotary kiln, and enhance raw meal production. Easy to burn, increase the liquid phase content of clinker, increase the lattice defects of dicalcium silicate in clinker, improve the activity of dicalcium silicate, and reduce the hydration heat value of cement.