Since compound of waste mud and rock cuttings was the main drilling solid waste, the massive landfill received drilling solid waste of the central field was investigated. And the solidified waste was sampled by the common planar method. The solidified waste was loose and of dark grey color. Experimental study showed that density of the solidif ied waste was1.75 g/cm moisture was 24.0%; and its component, heavy metal content, radioactive element content were respectively presented in Table 1~ Table 3.