There is provided a photocatalytic pulp composition having the antibacterial, bad smell degrading and harmful substance oxidatively degrading effects in various wide uses such as a filter material, packaging material, building material. A photocatalytic pulp composition is effectively used in the air treatment, the water treatment and the soil treatment and improves the photocatalytic activity effect itself.There is provided a photocatalytic pulp composition characterized in that 40 to 95 wt % of a pulp and/or a paper having the water content of 3 wt % or less, the average fiber diameter of 5 to 300 .mu.m and the average fiber length of 0.7 to 70 mm is blended with 5 to 60 wt % of titanium oxide. A photocatalytic pulp composition is provided in which 25 to 100 wt % of a thermoplastic resin is blended relative to the total weight of titanium oxide with a pulp and/or a paper blended at the above ratio.