Objective:To study and set the seed quality grading standard of Polgala tenuifolia. Method:The 1 000-grain weight

water content

germination rate

viability

single grain size

clarity and other indexes were measured and appearance was observed for 29 batches of P. tenuifolia seeds from different areas

and then Excel 2003 and SPSS 20.0 were used for clustering analysis to establish quality grading standards for the seeds. Result:Grade Ⅰ P. tenuifolia seed had a germination rate not less than 77.00%

viability not less than 94.00%

1 000-grain weight not less than 3.10 g

clarity not less than 80.00%

and water content not more than 8.00%. Grade Ⅱ seed had a germination rate of (67.00-77.00)%

viability of (88.00-94.00)%

1 000-grain weight of 2.80-3.10 g

clarity of (60.00-80.00)%

and water content of (8.00-9.00)%. Grade Ⅲ seed had a germination rate of (55.00-67.00)%

viability less than 88.00%

1 000-grain weight less than 2.80 g

clarity of (48.00-60.00)%

and water content more than 9.00%. Conclusion:Germination rate and viability were the main indicators of quality grading standards

with 1 000-grain weight as an important index

and clarity and water content as reference indexes. This quality classification standard of P. tenuifolia was scientific and practical

providing references for the quality evaluation and artificial cultivation of P. tenuifolia seeds.