RESUMEN
<p><b>OBJECTIVE</b>To find out the specialities of the effect of crude and processed Herba Siegesbeckiae on anti-inflammation and anti-rheumatism.</p><p><b>METHOD</b>Experiments were made on rats with swelling foot induced by carrageenin; experiments were made on mice with swelling ear induced by xylol; experiments were made on rats with chronic granuloma; experiments were made on rats with adjuvant arthritis.</p><p><b>RESULT</b>Foot swelling induced by carrageenin could be diminished with crude and processed Herba Siegesbeckiae at 6.0, 2.0 g x kg(-1). The rate of inhibition of foot swelling was more than 40%, effect of the crude drug was better than that of the processed one; both of them at 6.0, 2.0 g x kg(-1) could protect rats from primary and continuous lesion of adjuvant arthritis. The effect of the processed herb was obviously better than that of the crude one in its starting minute, strength and sustaining time.</p><p><b>CONCLUSION</b>The processed Herba Siegesbeckiae has obvious inhibition effect on immune inflammation. It is better than the crude Herb. Both of them have obvious inhibition effect on inflammation caused by carrageenin, with no distinct difference.</p>