The utility model discloses a double port type circulating device for a lithium cell pulping machine, and belongs to the field of pulping machine auxiliary equipment. The double port type circulating device is characterized by comprising a pulping barrel, a condenser and a diaphragm pump, wherein feed inlets of the pulping barrel are connected with the outlet of the condenser through a pipeline; feed outlets of pulping barrel are connected with the diaphragm pump and the inlet of the condenser in sequence through an output pipeline; an outlet is formed in the output pipeline; both the number of the feed inlets and the feed outlets is two. Compared with the prior art, the mixed material is uniform, the sizing agent viscosity is maintained to be stable, auto-agglutination and agglomeration phenomena at the inner part of the sizing agent are avoided, the pulping efficiency is high, and industrialized production is facilitated.