Abstract: Eleven sampling plots of 3y fallow field were investigated of eleven households of Daka, Xishuangbanna, Yunnan. The results show that there are great discrepancies of plant species richness among different households. Furthermore, hierarchical ag-glomerative graphics of 3y fallow field indicated that plant community similarities among different households are low. Meaning-while, according to the semi - structure interview of sampling households, the authors found that species economic value were dif-ferent from each household. Species - household curve that similar to area - species curve of 3y fallow field showes the minimum sampling percentage were 20 based on the fit and assessment of model curve S = a + blnB. A list of folk utilizable plants found in sampling plots is attached.

Key words: Household - based agrobiodiversity assessment (HH - ABA)