I asked the experienced old man to study the plant culture of an indigenous Rukai tribe. There are 207 useful plant species. Among these traditionally useful species, 8 cultivated species used as starch food, 30 wild and 6 cultivated species as vegetables, 14 wild and 5 cultivated species as fruits, 9 species as hobby food, 3 species as mixing materials of wine, 19 species as medicine, 18 species as construction materials, 3 species as clothes, 3 species as weaving materials of furniture, 11 species as furniture materials, 3species as dyestuff, 9 species as special ropes, 10 species as clearing materials, 8 species as agriculture tools, 5 species as rain coat, 2 species as group training, 2 species as carving material, 2 species as special sound transmitting materials, 4 species as poison-fishing materials, 7 species as hunting materials, 2 species as sticking materials to hunt bird, 6 species as materials of tracking special animals, 10 species as special fire materials, 4 species as non-fire materials for taboos, 8 wild and 4 cultivated species as decorated materials, 5 species as religious materials, 5 species as indicators of climate, 3 species as landmark materials, and 4 species as other useful materials. The culture of plant is not only useful in study the relationship among tribes and races but also a kind of knowledge property of indigenous people. We suggest the government should help the local people restoring their traditional group training for culture succession and sustainably using the plant resources for development.