Objective To optimize the extraction process conditions of Binghe Lotion.Methods Orthogonal test was employed for selecting the optimum extraction process by using the content of chlorogenic acid and total solid matters as indexes.Data processing was carried out with multi-index comprehensive evaluation method for optimizing the extaction condition.Results The optimum extracting condition was:soaking medical materials in water for 0.5 hour,boiling two times,1.0,0.5 hours respectively,the amount of water used was 10,8 times of the drug mixture respectively.Conclusio...