New display is one of the important footstones for electronic information industry, and one of the few industries with one trillion Yuan. Reflective display which is also called electronic paper display without backlight, using ambient light to read and having a similar “traditional paper” viewing experience, may become one of the mainstream display technologies. As a new reflective display technology, electrowetting display technology has the advantages of low energy consumption, visual health and flexibility, similar to the commercial electrophoretic electronic paper display products. At the same time, it breaks through two bottlenecks of “color” and “video playback” in the application field of electronic paper display technology and has been developed rapidly in recent decades. This review paper will systematically introduce the latest progress of electrowetting display technology, including key materials, device preparation, filling and packaging process, colorization.