The monsoon evergreen broad-leaved forest (MEBF) in Dinghushan Nature Reserve (DNR) has been considered as a zonal vegetation in lower subtropical China, with a history of more than 400 years. Its community structure, species diversity and community dynamics have been studied since 1956, so a lot of data have been well accumulated, which benefits the study on death dynamics of the plant individuals.The dynamics of plant death and its causes were studied based on the four times survey to the plant with DBH≥1cm in a 1hm² permanent plot of MEBF in DNR. The differences of death ratio among various species and diameter classes of these plants were explored. The results were showed as following: For the plants with DBH≥1cm from 1992 to 2004, there were 2411 plant individuals death occurred. These dead trees belonged to 92 species, amount for 85.19% of the total 108 species investigated in the plot. Within them,70 species were trees，and 22 were shrubs. The annual average number of plant death individuals increased linearly, also of the species involved death. Aporosa yunnanensis and Blastus cochinchinensis were abundant species, which the death individuals had the most, account of 18.48% and 18.25% on total death individuals. For the reason of insect irruption, the individuals’ death ratio of the former dominant species Cryptocarya concinna, reached to 90.83%. More death occurred on smaller diameter classes than on larger diameter classes, especially for DBH≤5cm, 79.22% individuals were dead. Self-thinning rule, catastrophic weather, insect irruption and human disturbances directly influenced the death dynamics of the plant individuals in the permanent plot.