[Objective] The aim of this study is to analyze the litter and soil hydrological characteristics in Kmeria septentrionalis communities in Mulun nature protection zone in Guangxi Zhuang Autonomous Region, in order to provide the basis for the evaluation of hydrological effects of K. septentrionalis communities.[Methods] In a continued area distributed with K. septentrionalis in Mulun, sampled plots were set to quantitatively investigate the hydrological characteristics of ground litter and soil.[Results] The litter volume was 11.68 t/hm², and the maximum water holding capacity was 19.46 t/hm². The available water interception was 13.87 t/hm², which was equivalent to 1.39 mm rainfall. The volume of semi-decomposed litter was greater than the volume of litter in non-decomposed layer, which accounted for 77.06% of total litter volume and produced 75.56% of the total litter interception. Soil bulk density, total porosity, capillary porosity and non-capillary porosity was from 1.14 to 1.26 g/cm³, 51.36% to 68.68%, 41.58% to 45.73%, 8.80% to 27.10%, respectively. Soil maximum water capacity and effective water holding was 868.75~941.04 t/hm² and 64.00~133.73 t/hm², respectively. The forest's total water capacity ranged from 79.75 to 148.74 t/hm².[Conclusion] The water interception in K. septentrionalis distributing area was mainly concentrated in soil layer, and the stand density significantly affected soil bulk density and available water storage.