The primary objective of this study is to evaluate the effects of the compound probiotic freeze-dried powder on gastrointestinal function and its impact on gut microbiota, immune factors, inflammatory markers, and intestinal barrier function.

Inclusion Criteria:

（1）Age: 18-65; （2）It conforms to the diagnostic criteria for gastrointestinal dysfunction formulated in the "Expert Consensus on Precision Health Communication in China - Guidelines for Citizens' Intestinal Health"; （3）Symptoms: Irregular defecation, loose or hard stools; Intestinal rumbling in the abdomen Abdominal distension Hiccups, belching; Severe intestinal flatulence; Abdominal pain Acid reflux and heartburn; Pain in the stomach or abdomen when hungry; Disgusting; (4) Signs: Abdominal pain and abdominal distension; Diarrhea and constipation Indigestion Gastric acid reflux Bad breath and farting smell; Skin problems The color and shape of the stool have changed.

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Exclusion Criteria:

(1)Drugs that affect the intestinal flora (including antibacterial drugs, microecological preparations, intestinal mucosal protectants, traditional Chinese patent medicines, etc.) should be used continuously for more than one week within one month before screening; （2）Recent use of products with similar functions to the test product, which may interfere with the judgment of the study results; (3) use of antibiotics during illness; (3)Use of antibiotics during illness; (4)Resence of severe systemic diseases or malignant tumors; (5)allergy to any components of the probiotics used in the study; (6)women who are pregnant, breastfeeding, or planning to conceive in the near future.

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