Objective To observe the clinical effect of Yangjinhua Powder Capsule（Flos Daturae Powder Capsule）in the treatment of Parkinson’s disease（PD）.Methods Of the 51 PD patients

15 who came for the first visit were administered Yangjinhua Powder Capsule only

and 36 who had been taking western medicine were given Yangjinhua Powder Capsule without stopping using the original medicine.The Unified Parkinson Disease Rating Scale（UPDRS）was used to score the patients before treatment

7 days

3 months

and 6 months after treatment respectively

and as well to evaluate the total effect and untoward reactions.Results After treatment

29（56.86%）patients were remarkably improved;11（21.57%）patients were improved;and 2（3.92%）patients were slightly improved.Totally 42 patients were improved.The total effective rate was 82.35%.After 7 days’ treatment

the improvement of tremor was significant（P<0.05）.After one month’s treatment

the total score of UPDRS

UPDRSⅡ and UPDRSⅢ scores

and tremor and myotonia scores were all significantly improved（P<0.05 or P<0.01）.Conclusion Yangjinhua Powder Capsule is effective in improving the clinical symptoms of PD patients.