OBJECTIVE: To observe clinical efficacy and safety of Bifidobacterium triple viable capsules in the adjunctive treatment of Helicobacter pylori (Hp) positive chronic atrophic gastritis (CAG) complicated with anxiety-depression. METHODS: A total of 100 Hp positive CAG patients with anxiety-depression were divided into control group and observation group according to random number table, with 50 cases in each group. Control group was given standard triple therapy (rabeprazole+amoxicillin and clavulanate+levofloxacin). Observation group was additionally given Bifidobacterium triple viable capsules 0.42 g, tid. The treatment lasted for 14 d in both groups. Clinical efficacies, Hp eradication rates as well as HAMA and HAMD scores before and after treatment were all observed in 2 group. The occurrence of ADR was compared. RESULTS: Total response rate of observation group was 94.0%, and Hp eradication rate was 92.0%, which were significantly higher than 76.0% and 78.0% of control group, with statistical significance (P<0.05). Before treatment, there was no statistical significance in HAMA and HAMD scores in 2 groups (P>0.05). After treatment, HAMA and HAMD scores of 2 groups were decreased significantly, the observation group was significantly lower than the control group, with statistical significance (P<0.05). The incidence of ADR in observation group (4.0%) was significantly lower than control group (20.0%), with statistical significance (P<0.05). CONCLUSIONS: Adjunctive use of Bifidobacterium triple viable capsules can significantly improve Hp eradication rate, clinical symptom, anxiety and depression, while reduce the incidence of ADR.