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Integrating textual criticism literatures with field survey, the name, classification and botanical originals of breeds of Tibetan medicine "Dida" were discussed in this paper. The results showed that it's very intricate and confusion in the names, breeds and botanical originals of "Dida", and those were the key restricting factors resulting in shortfall and difficult formulation in quality standard of "Dida". The similar situations are existing universally in ethnodrugs, and reflecting the necessity and urgency to collate ethnodrug breeds. On the other hand, Because of the morphologic description on the botanical origins of drug was often simple in the ancient literatures, and in most cases, the botanical origins of the drug were difficult to identify accurately on the basis of the literatures. So, in the collating the breeds, it's necessary to follow the principle of "according to the ancient literatures but no rigidly", and to pay attention to the historical vicissitude of the drug breeds and origins, and the survey of present resources and clinical using, draw actively on outcome of chemical and biological active researches. That inherited the characteristics and advantages of ethnodrugs, and promoted them them modernization.