This paper deals with the properties of particular Konjaku grown in the Yunnan plateau. The analyses were taken including underground and on the ground parts in 2003. Moreover, its productivity, the contents of chlorophyll and the speed of photosynthesis were also analyzed. The result showed that the output of Yongping corlored konjaku was the highest yield for 94452kg/hm2 in similar group. The output of white konjaku-14 was the highest yield for 57782.4 kg/hm2 in white group. While the outputs varied greatly in the wild konjaku group. Quality varieties of colored and white konjaku could be extension and applied on the konjaku production area in Yunnan province after numerous trials in different area through the whole province.