The aim of this study was to explore the efficacy and safety of a new vaginal microbiome transplantation technique, using Lactobacillus cispatus from healthy donors as a treatment of bacterial vaginosis.

The volunteers will be recruited from the women who come to the hospital to do the bacterial vaginosis test. After being informed about the potential risks, each volunteer giving written informed consent will be asked to complete a questionnaire.

Then, posterior fornix of vagina secretions will be taken from each volunteer to perform 16S rRNA gene sequencing microecology assessment , Clue cell detection and amine test.

After 2weeks ,1 month ,3 months,6 months,12 monthssince the entry, each volunteer will be asked to go back to research center to do the same sampling and examination as previously did in entry.

Inclusion Criteria:

1. History of sexual behaviour 2.18-55 years old 3. Women were diagnosed as bacterial vaginosis

Exclusion Criteria:

1. During pregnancy, or within 8 weeks after delivery;
2. presence of systemic diseases (such as SLE, malignant tumors, etc.)