Abstract: This paper reports the following results of study on epidemiology of moso bamboo foot rot caused by Arthrinium phaeospermum:(1)The initial infection occurs just at the tender epidermis of basilar part of culm,so the susceptible period when the host can be affected is very short;(2)Both the atmospheric temperature not below 16℃ and the rainfall above 4 mm are essential for the initial infection occuring,if the rain is very heavy during infection period,the disease will be serious;(3)According to the above mentioned results and the climate of South Jiangsu,a forecast technical scheme of moso bamboo foot rot which is on the basis of phenology and weather forecast was worked out.The results of field test from 1992～1994 have shown that this scheme is handy and practical.