The effect of different extraction methods on scale inhibition of tobacco rob extract was studied. The extract had good inhibition performance for calcium carbonate

calcium sulfate and calcium phosphate. The scale inhibition mechanism was studied with IR

XRD and SEM. The extract had good scale inhibition performance for deposition because of collaborative features of chelation function and distortion function. The method of rotary coupon test and polarization curve were used to study corrosion inhibition mechanism of tobacco rob extract. The extractor was an anodic corrosion inhibitor for carbon steel. The tobacco rob extract was an environment-friendly water treatment agent with excellent biodegradability.