Abstract: Provided is the use of an Abelmoschi corolla extract in the preparation of a drug for treating fibrosis, wherein the extract contains at least 15% of gossypetin-3-O-?-D-glucose-8-O-?-D-glucuronide, with same being prepared by means of the following method: taking medicinal materials of Abelmoschi corolla, heating same with ethanol and performing reflux extraction, performing filration, concentrating the filtrate, and carrying out macroporous resin column chromatography, where same is firstly washed with water, then eluting same with 3-7% of ethanol, eluting same with 9-15% of ethanol, and collecting 9-15% of an ethanol eluent in order to obtain the Abelmoschi corolla extract.