Abstract: In this study flavonoids content in Abutilon theophrasti Medic.was detected by spectrometric method with rutin as standard material. In the extracting process of total flavonoids,four main factors including concentration of extracting solution,solid-liquid ratio, time and temperature were studied by single factor analysis method. The results showed that the optimal extracting conditions obtained by orthogonal analysis are as follows: ethanol concentration 75%, solid-liquid ratio 1:40, refluxing temperature 60 ℃ and extracting duration 1.5 h. Total flavonoids yield from Abutilon theophrasti Medic. is 6.72% by the optimal process.

Key words: Abutilon theophrasti Medic., total flavonoids, extraction technology