It has been known that objects within the same perceptual group are selected together by object-based attention and that higher-level cognition could influence such lower-level perceptions. In two experiments, we explore whether emotional valence could form a perceptual object representation in this top-down manner, thus influencing people’s object-based selection. We used a version of the two-rectangle cueing paradigm, where two positive and two negative Chinese characters are placed on the screen to form two valence objects. In the first experiment, we controlled character locations to amplify the object effect. In the second experiment, we randomized character locations and implemented a 1s response window to validate our findings. As result, we found a conditional object-based cueing effect exists in experiment 1 and a main object-based cueing effect in experiment 2 with two properties: This effect is unbalanced across different valences and is enhanced when the target characters are repeatedly presented.