Inclusion criteria
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1. Accord with standard of western medicine in the diagnosis of ulcerative colitis, via colonoscopy and mucosa biopsy diagnosed with activity and conform to the clinical types:
(1) the early hairstyle or chronic recurrence model;
(2) the range of lesions: Montreal type E1 type, with or without E2 type;
(3) severity: improved Truelove - Witts disease severity classification standard for mild and moderate.
2. It conforms to the TCM syndrome differentiation standard of qi deficiency and blood stasis.
3. Age 18-65 years old (including the boundary value), gender is not limited.
4. Modified Mayo score >= 3 points and <= 10 points, including colonoscopy score >= 2 points (colonoscopy results within 30 days).
5. Signed informed consent voluntarily.
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Exclusion criteria:
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1. The lesion involved the sigmoid colon and the left hemicolon junction up to 15 cm or more.
2. Severe ulcerative colitis.
3. Serious complications, such as local stenosis, intestinal obstruction, intestinal perforation, massive hemorrhage of the lower digestive tract, intestinal canceration or canceration tendency, rectal and colon polyps (polyps size >= 5mm or number > 3), toxic megacolon and anal diseases (internal hemorrhoids, perianal abscesses, anal fissures).
4. Hormone dependent or hormone resistant bowel disease.
5. History of gastrointestinal surgery.
6. Patients with heart, brain, liver, kidney, lung, hematopoietic system, endocrine system, respiratory system and other serious primary diseases and mental disorders.
7. Liver function is impaired (AST or ALT is more than 1.5 times the upper limit of normal), or renal function is impaired (Cr is higher than the upper limit of normal).
8. Patients with a history of asthma.
9. Allergic constitution (allergic to two or more drugs).
10. Allergic to salicylic acid or its metabolic components or active components, sulfate esterase preparations, components of colitis supposes (panax notoginseng, frankincense, gallnut, radix astragali, Japanese ampelopsis root). 11. Those who have used traditional Chinese medicine for the treatment of ulcerative colitis within 1 week before administration, or chemical drugs (such as 5-aminosalicylic acid preparation and corticosteroids) or biological agents (such as infliximab) for the treatment of ulcerative colitis within 7 half-lives before administration.
12. Colonoscopy for contraindications.
13. Women who are pregnant or planning to become pregnant, or who are nursing.
14. Contraindications for the use of experimental drugs, such as gastric and 12-finger ulcer patients, bleeding constitution (bleeding tendency).
15. Suspect or have a history of alcohol or drug abuse.
16. Participants in other clinical trials within 3 months.
17. Women of child-bearing age (male/female) who do not agree to use proven effective contraception during the study period and at least 1 month after the study is completed, and/or are unwilling or unable to undergo pregnancy testing.
18. According to the researcher's judgment, it is not suitable for participants in clinical trials.
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