Objective: To analyze medicinal characteristics and compatibility laws of traditional Chinese medicine(TCM) for active rheumatoid arthritis(RA) from Guang'anmen hospital. Method: Collected and collated TCM prescriptions of hospitalized patients in Guang'anmen hospital from July 2009 to July 2012 on active RA.In the foundation of database

we analyzed frequency with SPSS 16.0 software and calculated correlation degree with association rules. Result: We had collected 314 prescriptions of 99 cases of patients.There were thirteen herbs

frequency of which in prescriptions was more than 50%

such as Angelica sinensis

Coix lacryma-jobi

Paeonia lactiflora

ect. The cold herbs was the most

then was the the warn herbs;The bitter

sweet and spicy herbs respectively;Herbs belonging to liver was the most

then was the herbs belonging to stomach and spleen;toxic Chinese medicines accounted for 5.81% in all.High correlation of the herbs was Atractylodis Rhizoma/Cyathulae Radix/Phellodendri Chinensis Cortex/Coicis Semen

Angelicae Sinensis Radix/Chuanxiong Rhizoma/Paeoniae Rodix Rubra and other couplet medicines. Conclusion: Guang'anmen hospital treated active RA with heat cleaning/dehumidification/activating blood method based on wet

heat and stasis.They paid much attention to the function of liver

also did not forget to regulate function of the spleen and the stomach.