NOVELTY - Preparation of porous spherical titanium dioxide pulp comprises adding cetylamine to anhydrous ethanol, ultrasonically dispersing to fully dissolve, dispersing titanium dioxide precursor in mixed solution of anhydrous ethanol, deionized water and ammonia water, shifting to enclosed reaction caldron, heating at 160 degrees C, reacting for 16 hours at constant temperature, mixing ethyl cellulose and terpinol with porous ball titanium dioxide, ultrasonically dispersing, vaporizing until no solvent is volatilized to obtain porous ball titanium dioxide pulp.    USE - Method for preparing porous spherical titanium dioxide pulp used for preparing dye sensitized solar cell optical anode (claimed).    ADVANTAGE - The method utilizes easily obtained raw materials, has simple operation and low energy-consumption; and the pulp has stable structure, high specific surface area and easy conservation, and is suitable for preparation of high-efficiency dye cell.    DETAILED DESCRIPTION - Preparation of porous spherical titanium dioxide pulp comprises:    (A) adding cetylamine to anhydrous ethanol, ultrasonically dispersing to fully dissolve, stirring while adding potassium chloride solution to obtain mixed solution I, rapidly adding isopropyl titanate, stirring to obtain opaque turbid liquid, boiling, separating to obtain solid in turbid liquid, and drying the solid in turbid liquid to obtain titanium dioxide precursor, with mol ratio of isopropyl titanate, cetylamine, water, potassium chloride and ethanol of 1:0.3-1:3-4:0.0055:200 to 250;    (B) dispersing titanium dioxide precursor in mixed solution of anhydrous ethanol, deionized water and ammonia water, shifting to enclosed reaction caldron, heating at 160 degrees C, reacting for 16 hours at constant temperature, at volume ratio of anhydrous ethanol and deionized water of 2:1, mol concentration of ammonia water in mixed solution of ethanol and deionized water at 0.2-0.5 mol/L, weight ratio of titanium dioxide precursor to deionized water at 1:6-1:7; when sealed reaction kettle cools to room temperature, moving reaction liquid from sealed reaction caldron out, rotationally vaporizing at 50 degrees C to remove nitrogen in reaction liquid, and washing with ethanol to obtain porous ball titanium dioxide;and    (C) weighing ethyl cellulose and terpinol at weight ratio of titanium dioxide, ethyl cellulose and terpinol at 1:2:8, mixing with porous ball titanium dioxide, ultrasonically dispersing, vaporizing until no solvent is volatilized to obtain porous ball titanium dioxide pulp.    An INDEPENDENT CLAIM is included for a dye sensitized solar cell comprising anode and cathode and electrolyte between anode and cathode, with anode of dye sensitized solar cell optical anode.