本文探討實証需求分析之消費者加總目題，以及利用臺灣地區家計單位分組消費支丑資料，驗証正確加總條件。檢定統計量概似比值顯示樣本資料拒絕需求模式設定為線性加總，和不同所得組別需求偏好結構是一致之虛無假說。檢定結果意涵著運用臺灣地區定計單位分組資料，進行消費支出行為研究時，實証需求模式設定應符合非線性加總條件，以及納入所得分配的影響效果。

　　　　　The paper investigates conditions of aggregation across consumers, in empirical demandanalysis as well as examines exact aggregation of consumption data in Taiwan. The likelihood ratiotests indicate the null hypothesis of exact linear aggregations and identical preferences acrossincome groups are rejected by the sample data. The results suggest that specifications of anempirical demand system should satisfy nonlinear aggregation conditions and incorporate the effectof income distribution if income groups consumption and incorporate the effect of incomedistribution if income groups consumption data in Taiwan are employed for analyzing consumerbehavior.