Percentage Statistics is widely used as an approach in consumer preference test for its simplicity and convenience, but the rationality of this method is rarely studied. Two consumer sensory testing of different kinds of dairy products were taken as an example for representing the application of percentage statistics. After comparing the results obtained from percentage statistics and one-way analysis of variance (one-way ANOVA) respectively, it was concluded that percentage statistics was not a standard statistic method as it could cause large errors. Percentage statistics could be used to get qualitative results rapidly when one-way ANOVA method was not suitable as the samples did not meet the normal distribution, or they were heterogeneity of variance.