Abstract: Abstract:　Cuttings propagation technology of Sloanea hemsleyana autumn robust branches studied with dynamic changes of peroxidase (POD) activity，superoxide dismutase (SOD) activity and malondialdehyde (MDA) content during rooting . The results showed that cuttings with K-IBA-3000mg/kg treatment has the highest rooting percentage which was 78%，cuttings with KNAA-1000mg/kg treatment has the lowest rooting percentage which was 13%，the rank of the K-IBA treatment was: K-IBA-3000mg/kg（78%）﹥K-IBA-1000mg/kg（63%）﹥K-IBA-5000mg/kg（38%）. During rooting of Sloanea hemsleyana autumn cutting，the superoxide dismutase activity increased first and then declined，and have a peak on the 20th. The peroxidase activity changes were siilar to the superoxide dismutase activity. The malondialdehyde content accumulated first rapidly，and then declined all the time，it has a peak on the 20th. Key words:　 Sloanea hemsleyana; autumn cutting; rooting rate; enzymic activity