The invention relates to a method for filtering and clarifying citric acid fermentation broth. The method is characterized by employing a filter aid and a centrifuge to conduct solid-liquid separation of the broth, then cellulose is used for precoat filter to obtain a clarified fermentation broth with turbidity of less than 4NTU. After the implementation of the invention, the solid-liquid separation of the broth reaches continuity, the labor intensity for disassembling sheet frame and washing and changing filter cloth are reduced, and the addition of the filter aid improves the quality of the fermentation broth.