The invention belongs to the technical field of sewage processing, and concretely relates to a drilling wastes recycling method. The method comprises the following steps: performing primary purifying, removing rock debris and sandstones; performing destabilizing and flocculating treatment, conglomerating the suspending granules into a flocculent body; performing solid-liquid separating, using a separated sludge for profile control of a water injection well in an oil field; performing biological treatment on the separated sewage to reduce COD, carrying out microfiltration and ultrafiltration processing for removing a suspension and a colloid as well as reducing SDI, performing reverse osmosis to obtain fresh water for reuse, evaporating concentrated water obtained by reverse osmosis and crystallization, reusing the fresh water obtained by evaporation, and reusing the common salt and potassium chloride obtained by crystallization as an additive of a drilling fluid. The method realizes harmlessness and recycling of the drilling wastes, eliminates pollution on surrounding environment, and is in favor of protection of resources such as soil, air and underground water at periphery of a well field. The method can be widely used in a recycling treatment process of the drilling wastes in the oil field.