In daily life,people believe others have general moral views and basic moral cognitive abilities.Howev-er,the possibility and status of moral knowledge have sparked widespread controversy in the field of moral episte-mology.Some scholars have recently argued that moral testimony is not fundamentally different from other forms of testimony,which presents a new perspective on the possibility of moral knowledge.The paper discovers that the view above is known as Anti-Reductionism in the epistemology of testimony.Anti-reductionism of moral testimo-ny faces several challenges,such as addressing the issue of moral disagreement,explaining moral expertise,and mistakenly expanding the scope of moral knowledge.To address these challenges,the concept of credence is intro-duced,and a reductionist approach to moral testimony is developed.By doing so,we emphasize the importance of practical rationality in social interaction and avoid following others blindly and being irrationally gullible.