Black-bloom was an environment issue that often occurred recently and the polluted surface sediment was known as the most important reason for its occurrence. Plow-tillage was a cost-effective and practicable engineering measure which was designed for internal loading control. Based on the simulated experiment in laboratory, effects of plow-tillage on the prevention and control of algae-caused black bloom was studied. The color and odor, nutrient concentration of overlaying water, the concentrations of volatile sulfur compounds and physicochemical characteristic of sediment were measured. The results were showed as follows: black bloom occurred in both control check set and treatment sets l day after plow-tillage for the two diffirent plow-tillage depths, but its duration and degree in control check set were more serious than those in treatment sets l day after plow-tillage. The treatment sets of 180 and 540 days after plow-tillage of both depths didn't experienced black bloom during the whole simulated experiment. Overall, the appropriate project time of plow-tillage can prevent the occurrence and control the degree of algae-caused black bloom.