OBJECTIVE:To investigate the incidence and clinical manifestations of adverse drug reactions(ADR)induced by Chinese drugs preparations in hospitals of Ya'an district and discuss the rational dosage regimen of Chinese drugs preparations.METHODS:The adverse drug reactions(ADR)induced by Chinese drugs preparations in hospitals of Ya'an district occurred from Jan.to Dec.in 2008 were analyzed statistically.RESULTS:The ADR induced by Chinese drugs preparations occurred via intravenous drip represented 76.8% of the total;lesions the skin and its appendages the major system-organ involved,represented 31.3% of the total;18.3% were induced by Shuanghuanglian injections,and serious ADR accounted for 4.0%.CONCLUSION:It is important to use traditional medicine preparations rationally so as to reduce or avoid the incidence of ADR.