The paper aimed to explore the anatomical structure of digestive tract of female and male adults of Holotrichia oblita Fald. through optical microscopy and scanning electron microscope (SEM). The results showed that the foregut of digestive tract consists of mouth, pharynx, oesophagus, crop and proventriculus. The crop was well developed and cylinder shaped with its inner surface showing ruffling structure. The proventriculus had hair-like structure on the inner membrane. The mid gut was long with rich microvilli and spherical micro-protrusions on the inner surface, besides, small amount of goblet cells also distributed on the inner surface. The hindgut includes ileum, colon and rectum. The rectum had well developed rectal pads. No difference was found in characteristics of digestive tract between the male and the female adults. The results provide evidence that the structure features of digestive tract of Holotrichia oblita Fald. are adapted to its digestion, feeding behavior and inhabiting habit.