Abstract: The aim of this study was to find out whether "subsystem superiority" exists when remembering single-feature objects, because in pre-experiment it was found that accuracy was better when two subsystems were involved in memory task than when only one subsystem is involved when multiple-feature objects were remembered. Ss were 17 students in University of Science and Technology of China. Ss were required to remember single-feature objects of the same number. In Condition 1, objects had the same kind of feature, while in condition 2, objects were classified into two features. The accuracies in both conditions were compared and it was found that the accuracy of condition 2 was better than that of condition 1. The result suggests "subsystem priority" exists when remembering single-feature objects

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