目的：测定盐酸苯环壬酯片的含量及溶出度。方法：采用浓剂萃取、酸性色素比色法测定含量，检测波长413 nm。溶出度以转篮法测定，转速100 r·min^-1，溶出介质500 ml pH 3磷酸盐缓冲液。结果：3.0～15.0μg·ml^-1范围内线性良好，r=0.9999(n=5)，平均回收率99.95%(n=9)，RSD为土0.65%。片剂30 min定时取样测定，主药溶出90%以上。结论：方法简便、准确、专属，可作为该制剂的含量浏定和质量控制。

OBJECTIVE: To determine the content and dissolution of phencynonate hydrochloride tablets (PHT). METHODS: A solvent extractionacid dye spectrophotometry method was used with the detection wavelength at 413 nm.A basker method was used to study the dissolution,the rotative velocity was 100 r·min^-1and the solvent was 500 ml of phosphate buffer solution (pH 3). RESULTS: The linear range of the standard curve was 3.0～15.0 μg·ml^-1,r=0.9999,n=5.The average recovery of assay was 99.95% with a relative standard deviation of 0.65% (n=9).The drug dissolution rate for 30 min was over 90%. CONCLUSION: This method is convenient,accurate and specific for the content determination of PHT.