Objective: Analyzing the testing result of Xingnaojing injection and comparing and appraising the quality of different products. Method: Technical test and tcorrelation analysis were used to analyze the unqualified cause and calculating mean and relative standard deviation with testing data. Cluster analysis was applied to compare the stability of different products quality and differences. Result: Correlation analysis indicated that camphor was closely positive correlated to isoborneol (P<0.01) and osmetic pressure (P<0.05)

and negative correlated to borneol (P<0.01). pH was negative correlated to isoborneol (P<0.05). The cause of pH unqualified is related to technical control. Mean and relative standard deviation indicated that the product of W enterprise is better than the others. Cluster analysis indicated the products can be identified. Conclusion : Each of three enterprises has its individual characteristics in materials and technical control. May choose according to needs.