With its remarkable advantages of rapid growth, high yield, wide application and good economic returns, Phyllostachys edulis has been one of the most extensively cultivated bamboo in China, especially in South China. Soil heat fluxes and meteorological factors of P. edulis ecosystems in Anji were monitored with soil heat flux plates (HFP01) and a meteorological monitoring system. Presently, few works are available on soil heat fluxes in P. edulis ecosystems, but soil heat flux is an important part of ecosystem energy flow. Based on the soil heat flux data measured from Dec. 1st 2010 to Nov. 30th 2011, relationships of soil heat flux with soil temperatures and, soil of water contents in three soil layers and net radiation were analyzed. Results show that soil heat flux varied seasonally with monthly mean flux differing sharply between months, and diurnally, displaying an “S” curve, with one peak and one valley. On an annual scale, soil is the source of heat, providing-7.52 MJ m² a year and contributing, -0.289% to the total net radiation of a year. The maximum positive value appeared in July and the maximum negative one in January. Regression relationship analysis of different temporal scales and different soil depths shows that on a monthly scale, soil heat flux was best related to the soil temperature at 5 cm in soil depth, showing a relationship at the extremely significant level, while on a daily scale, soil heat flux was in an extremely significant relationship with soil water content at 5 cm in soil depth, but the correlation coefficient was not so high. The monthly mean of soil heat fluxes was extremely significantly related with net radiation on a monthly scale and even at a half-an-hour scale, showing no temporal retardation phenomenon.