Abstract: Based on the literature search, interview, sample line and sample plot investigation, studies were made of the distribution, population structure and regeneration condition of Cercidiphyllum japonicum resources in Xuebaoding National Nature Reserve. The results showed that (1) there were 894 Cercidiphyllum japonicum plants in the Reserve, which were distributed in the elevation range of 1 600~2 400 meters; (2) there were 174 and 397 Cercidiphyllum japonicum plants in Mushuba and Dupingba respectively, accounting for 19.46% and 44.41% of the total; (3) there were 618 Cercidiphyllum japonicum plants with DBH between 5~45 cm, accounting for 69.13% of the total; (4) Cercidiphyllum japonicum trees were mainly distributed in the east, northeast, north, west and northwest slopes, accounting for 72.97% of the total.