Abstract:To compare the effect of different ways of drainage on bile duct stones with obstructive jaundice and the effect of immunization. Methods A total of 82 cases of bile duct stones with obstructive jaundice were selected and randomized into group A and group B, 41 cases in each group. The group A had self-expanding negative pressure suction device for drainage, while group B was drained by nasal biliary drainage. The drainage volume at 3 days after operation, the average level of serum total bilirubin (TBIL) and direct bilirubin (DBIL) levels at different time after operation, the levels of C-reactive protein(CRP),immunoglobulin, T lymphocyte subpopulation at 1-d before surgery and 1, 3 and 7-d after surgery were observed between the two groups. Results The levels of bile drainage, TBIL, DBIL, CRP, IgA, IgM, IgG,CD3+, CD4+, CD8+, CD4+/CD8+ were significantly different at different time points (p = 0.000). The levels of bile drainage, TBIL, DBIL, CRP, IgA, IgM, IgG, CD3+, CD4+, CD8+, CD4+/CD8+ were significantly different between group A and group B (p = 0.000). The changes of bile drainage, TBIL, DBIL, CRP, IgA, IgM, IgG,CD3+, CD4+, CD8+, CD4+/CD8+ in two groups were statistically significant (p = 0.000). The total incidences of postoperative complications were 4.88% and 12.20% in group A and group B, the difference was not statistically significant (p > 0.05). Conclusions Nasal bile duct continuous negative pressure suction can be more effective drainage of bile,and strengthen the effect of reducing jaundice and promote the body's immune system faster recovery, easy to operate and less complications, worthy of clinical promotion.