Plants have a history of more than 3 billion years on earth, maintaining the ecological balance of the earth with natural and powerful sensing systems. In recent years, scientists have used the electrical signal conduction of plants as the sensor of electronic products to develop sustainable design. At present, in the field of scientific research, the degree of attention paid to the study on plant perception mechanism is not enough, and the design of popular science is relatively less. Through the research of plant perception mechanism, this paper introduces the design of science popularization interactive installation based on the principle of phototropism, and summarizes the design method of science popularization installation. With a novel carrier of popular science and design methods, the audience can have “initiative” in the process of popularizing science, the purpose is to quickly understand the phototropism, at the same time, to emphasize the plant perception ability hidden in people’s side, in order to enlighten the audience’s scientific thinking.