The study hypothesis is whether digestion enzyme(Combizym) and intestinal flora drugs(Bifidobacteria) can decease recurrence rate of colon polyps

Colon polyps has high recurrence rate in the digestion diseases. However, the reasons are not clear. The possible reasons for the recurrence of colon polyps include intestinal inflammation (e.g., Ulcerative colitis), intestinal flora imbalance (the benefit intestinal bacteria reduced, which lead to diarrhea or constipation), long-term indigestion. The investigators propose to examine whether digestion enzyme (Combizym) and intestinal flora drugs(Bifidobacteria) can decease recurrence rate of colon polyps

Inclusion Criteria:

-Patients who have cutted colon polyps in one month, and the diagnosis were proved by pathological analysis

Exclusion Criteria:

• have organic or other functional disease
• pregnant or breast-feeding