A randomized, open-label, parallel-controlled clinical study on the efficacy and safety of Shouhuitongbian Capsule combined with Shouhuitongbian Probiotics in the treatment of functional constipation (qi and yin deficiency syndrome)

INTERVENTION: Treatment group 2:Phase 1 14±2 days: Shouhui Laxative Capsules; Phase 2 42±4 days: First Companion Probiotics.;Treatment group 1:The first stage is 14±2 days: Shouhui Laxative Capsule + Shouhui Mate Probiotic; Phase 2 42±4 days: First Companion Probiotics.;Treatment group 3:Phase 1 14±2 days: Shouhui Laxative Capsules; Phase 2: None; CONDITION: Functional constipation (qi and yin deficiency syndrome) PRIMARY OUTCOME: Number of complete spontaneous bowel movements (CSBM) response rate:Proportion of patients who meet; SECONDARY OUTCOME: The number of bowel movements (BM) in the last week of the treatment period compared to baseline;Constipation Quality of Life Assessment Scale (PAC‐QOL);Stool Condition (Using the Bristol Stool Character Scale) score compared to baseline in the last wee;TCM Syndrome Points;Mean weekly stool trait score;Occurrence of completely spontaneous bowel movement (CSBM) within 24 hours of starting treatment;Changes in intestinal flora;Proportion of subjects with an average of 3 complete spontaneous bowel movements (CSBM=) per week wi;Remediation of drug use;The average number of SBMs per week;The number of spontaneous bowel movements (SBM) in the last week of the treatment period compared to; INCLUSION CRITERIA: 1: Age 18 70 years old (including boundary value), gender is not limited 2: Meets Western medical diagnostic criteria for functional constipation 3: The syndrome differentiation in traditional Chinese medicine is the deficiency pattern of qi and yin 4: Voluntarily participate in this trial and sign a written informed consent document