Observation on the immediate effect of acupuncture on the pelvic floor muscle function of female stress urinary incontinence

INTERVENTION: Experimental group:Acupuncture;Control group:Sham acupuncture; CONDITION: stress urinary incontinence PRIMARY OUTCOME: the mean and variability of EMG in postrest phase(post‐baseline rest);the maximum and relaxation time of 5 rapid contractions(phasic contractions); the mean and variability of EMG in 10 s tonic contraction phase(tonic contractions);the mean and variation coefficient in the prerest phase(baseline rest);the mean and variability of EMG in 60 s endurance contraction phase(endurance contraction); INCLUSION CRITERIA: 1. Patients who meet the western medicine diagnostic criteria of mild to moderate stress urinary incontinence; 2. Patients who meet the TCM diagnostic criteria of stress urinary incontinence and Kidney qi deficiency syndrome; 3. Aged 40 to 70 years female, married women; 4. Participate in the study voluntarily and sign informed consent.