Objective: To optimize processing technology of Arcae Concha

and to lay the foundation for controlling the quality of processed products of Arcae Concha. Method: Taking comprehensive score of properties

yield of decoction pieces

pH value of water extract

water soluble extract content and Ca2+ content in decoction as index

single factor tests and orthogonal test were used to optimize the calcining process and calcining vinegar quenching process of Arcae Concha

and the salt quenching process and water quenching process were compared for optimizing the best processing technology. Result: Optimum calcining process conditions were as follows:temperature of 750 ℃ and calcining time of 30 min.The best calcining vinegar quenching process conditions were as follows:temperature of 850 ℃

calcined 90 min immediately after adding 0.3 times the amount of vinegar with vinegar concentration of 9%.The ranking of multi-index comprehensive score of different processing technology was calcined vinegar products > calcined products > calcined salt water quenching products > calcined distilled water quenching products.Under the optimum conditions

the traits of calcined vinegar were in accordance with the requirements of gray and crisp texture

the yield of decoction pieces was 67.40%

pH of water extract was 12.47

water soluble extract content was 9.70% and Ca2+ content in decoction was 7.01%. Conclusion: The preferred process is stable and feasible

it can provide scientific basis for future production of Arcae Concha

improve the quality of its processed products and ensure the safety and effectiveness of clinical medication.