Objective To research the effect of Fuyanjing on in vitro culture of fibroblast and mRNA expression of type Ⅲ collagen proteins. Methods NIH3T3 fibroblast was incubated in vitro. Cell proliferation were measured using MTT and mRNA expression of type Ⅲ collagen proteins were tested by RT-PCR. Results Compound of Fuyanjing could restrain the fibroblast proliferation and the expression of type Ⅲ collagen proteins. Its effect showed dose-dependent. Conclusion Compound of Fuyanjing could restrain the fibroblast proliferation and the expression of type Ⅲ collagen proteins at the level of reverse transcription. It could repair tissue of chronic pelvic inflammation by adjust of fibroblast metabolism.