OBJECTIVE： To optimize the extraction technology for organic acids in Crataegi fructus. METHODS： Based on single factor test， using liquid-solid ratio， extraction time and ethanol volume fraction as independent variables， extraction yield of organic acids as dependent variable， central composite design-response surface method was used to optimize the extraction technology of organic acids in Crataegi fructus. RESULTS： The optimal extraction technology was as follow as liquid-solid ratio of 18.5 ∶ 1， adding 75％ ethanol， reflux extraction twice， 2.0 h each time. Average extraction yield of organic acids in verification test was 5.22％ （RSD＝2.70％， n＝3）， with 1.75％ relative error of the predicted value （5.13％）. CONCLUSIONS： Optimized extraction technology for organic acids in Crataegi fructus is simple， with good reproducibility and predictability.