Abstract:Objective:Based on a study of Concha Ostreae,to provide some reference for the rational approach to leaching mineral drugs.Method:Taking the change rates of compatible leaching and value of A as targets,the compatible leaching effect of Concha Ostreae with Radix et Rhizoma Rhei Praeparata,Radix Scutellariae, Pollen Typhae and Fructus Aurantii lmmaturus was studied.Result:If Concha Ostreae and the above cited medicinal herbs are decocted together,the yield of extract may be reduced to a certain extent,but the target composition of Radix et Rhizoma Rhei Praeparata and Fructus Aurantii lmmaturus remains intact,only the content of Radix Scutellariae baicalin may be influenced.Conclusion:The relationship of technology with preparation must be taken into consideration when making choice of the proper way to leach Concha Ostreae.