Considering that the ecological environment of the Nanji Mountain Wetland Nature Reserve in Poyang Lake, Jiangxi Province is deteriorating in the real environment, in order to let more people know about the Nanji Mountain Wetland, and at the same time call on everyone to protect it, we created this digital picture book. The picture book introduces the Nanjishan Wetland Nature Reserve from the aspects of geographical location, environmental climate, geological soil, plant diversity and biodiversity. The style of illustration painting adopts flat style, which reduces the age of the audience and makes the spread of picture books more widely.