Abstract: Comparative studies were made of cutting experiments of Dalbergia sissoo treated by different plant-growth regulations including IBA,NAA,IAA,6-BA in dry-hot valleys of Panzhihua.The results showed that visible callus occurred under all the above treatments.IBA could significantly improve the rooting rate of D.sissoo.The rooting ratios of cuttings were up to 56% and 66% respectively by treatment of IBA 100 mg·L^-2 and IBA 200 mg·L^-2,better than other IBA treatments,the rooting ratios of cuttings were 30% and 18% with IBA 400 mg·L^-2 and IBA 800 mg·L^-2 treatments.Obviously,the high concentration of IBA could inhibit the growth of root tissue cultures.The highest rooting ratio reached 44% by NAA 100 mg·L^-2 treatment,but rooting ratios were 20% to 34% by all the treatments of IAA.There was no rooting occurred under all the 6BA treatments and 25 mg·L^-2 NAA,even lower than that of control group,which could be influenced by other uncontrollable factors for further research.