Abstract: The filterability of viscose is one of the most important characteristics of dissolving pulp. In this paper, the filterability of viscose prepared from mangrove dissolving pulp (MDP) was compared with that from hardwood dissolving pulp (LDP) or softwood dissolving pulp (NDP). The filterability of the viscose prepared from MDP with the xanthation method by use of the emulsified carbon bisulphide reagent, was more excellent than that from LDP and was comparable with that from NDP. In industrial viscose process, sodium cellulose prepared from MDP showed higher compressibility than that from LDP. Press ratio suitable to viscose process for the MDP was found to be 2.30±0.05 to the oven dry pulp. This range was very narrow as compared with those in other dissolving pulps. The quantities of sodium hydroxide in steeping and carbon bisulphide necessary for xanthation of the MDP were nearly equal for the LDP and the NDP. The filterability of the viscose prepared from MDP at the suitable conditions was better than that from LDP, whereas it was inferior to that from NDP and nearly equal to that from LMDP (L50 : M50). The optical microscopic observation of the filtered residue of viscose from MDP revealed that there existed many free fibers compared with other dissolving pulps, forming the min obstacles to filtration. As we considered that the strong pressing of sodium cellulose from MDP caused heterogeneities in shredding, the press ratio was regulated by varying the blending ratio of LDP or NDP to MDP. And with this method, the filterability for the dissolving pulp of L25 : M75 showed the minimum KW and the suitable press factor was obtained at the press ratio of 2.42.6. The filterability for the dissolving pulp of N30 : M70 showed the value as much as 20% higher KW than that for the pure NDP, in which case the suitable press factor was abtained at the press ratio of 2.6. By blending 2530% of LDP or NDP to MDP, the shredding of sodium cellulose from MDP was improved and the filterability of viscose was remarkably made better.