Standing dead trees(SDT) are widespread in forest ecosystems and have a particular important in-fluence on forest development and succession. Based on vegetation community survey in plots of 4 hm² in Mulan-Weichang forest farm of Hebei Province, this study analyzed the species, diameter structure, bio-mass and distribution pattern of SDT in the rocky mountain area of Northern China. The results indicate that the SDT involved eight species. The density of the SDT was 79.25 stems/hm² , accounting for 10.13% of to-tal tree numbers in the plots. The biomass of the SDT was 18.46 t/hm² , accounting for 6.88% of the total biomass in the plots. Among them, both the number and the biomass of Populus were the greatest, account-ing for 83.60% and 90.58% of all the SDT, respectively. The diameter at breast height(DBH) of the major-ity of the SDT was smaller than 22 cm. The average uniform angle index of all the SDT of the forest is 0. 543, indicating a random distribution pattern.