Abstract: Pigeonpea ( Cajanus cajan (L) Millsp) with different coat color from 8 counties of Yunnan and 2 check varieties from India were soaked in different methods The stiff seed ration was determined, and the variance analysis was used The results show that a)the stiff seed ration is markedly related to coat color, growing fields, soak time and so on; b) pigeonpea seeds with light coat color has lower stiff seed ration; c) the stiff seed ration treated by boiling water and cold water has no marked difference; d) the stiff seed ration of the pigeonpea landrace from Donchuan was the lowest.