Abstract:Algae-induce black bloom has occurred in the spring and summer, but the whole process of black bloom occurring was difficult to tracked in the wild. The study used a patented device simulation that the occurred process of algae-induce black bloom in spring and summer, and studied the change process of characteristics indicators of visual and olfactory when the black bloom occurred. The results showed that: spring black bloom occurred takes longer than in summer, and the short duration. True chromaticity and suspended solids of the black water in spring higher than in summer, and more intense volatile. The change process of the odor substances in summer black bloom more obvious than in spring, at the same time, the black bloom of summer was more quickly, more obvious, and more durable than spring. The algae-induced black bloom processes of spring and summer have shown black and odor appear not synchronized, olfactory effect manifested earlier than visual effects, that is olfactory effect appeared earlier than the visual effect.