Objective: To evaluate the quality of different specifications and different parts for sale to collect. Method: HPLC method

Kromasil Eternity-5-C18 chromatographic conditions (4.6 mm×250 mm

5 μm)chromatographic column; the mobile phase consisted of acetonitrile (A)-0.4% acetic acid solution (B); gradient elution:0.01 min

15%A

0.01-20 min

20-25%A

35 min

30%A

35-40 min

40%A

50 min

40%A; 50-70 min

15%; volume flow rate of 1 mL·min-1

column temperature was 30℃

the detection wavelength was 280 nm. Result: The Baicalin from the processed strip type Radix scutellariae was 66% higher than the processed Radix scutellariae with xylem rotten. The Baicalin from the pieces of processed strip type Radix scutellariae was 4.06% lower than the pieces of processed Radix scutellariae with xylem rotten. The processed Radix scutellariae with xylem rotten part of almost no Baicalin. The content of baicalin

that below 4 mm Scutellaria baicalensis and fibrous root in about 12%. Conclusion: The processed strip type Radix scutellariae was more expensive than processed Radix scutellariae with xylem rotten. Suggestions of below 4 mm Scutellaria baicalensis and Fibrous root medicinal. The processed Radix scutellariae with xylem rotten part not be medicinal.