Group bias and fairness preferences are common social phenomena in life. During social
interactions, researchers usually use the ultimatum game paradigm to explore individuals’ perceptions
of fairness, and furtherly discover that the emergence of group biases directly affects individuals’ fairness
preferences. Group bias and fairness preference both have an effect on the individual’s emotional
experience. In order to explore the emotion regulation effect of unconscious acceptance strategies
and conscious acceptance strategies on fairness preferences and group biases, this research aims to
test subjects’ rejection rates and subjective emotional experience score, while unconscious acceptance
strategies are motivated by connecting words to form sentences and conscious acceptance strategies are
motivated by special instructions. The results show that the acceptance strategy effectively regulates the
emotional state and behavior of individuals’ perception of fairness under the group bias; the unconscious
acceptance strategy strongly promotes the in-group bias under unfair distribution, which verifies the fair
preference automatic hypothesis; the conscious acceptance strategy strongly promotes the derogation of
out-groups under fair distribution, which verifies the controlled-processing hypothesis.