NOVELTY - A phytosterol is extracted from plant oil deodorizer distillate by (A) esterification; (B) filtering, (C) coldly separating, and (D) washing and drying. The step (A) includes calculating theoretical amount of alcohol according to content of free fatty acid in deodorizer distillate. The step (B) includes separating solid acid and reaction system through filtering, preserving solid and recycling. The step (C) includes after filtering solid acid catalyst via esterified reaction system and coldly separating. The step (D) includes washing filtered substance using ethanol and acetone.    USE - Method for extracting phytosterol from plant oil deodorizer distillate (claimed).    ADVANTAGE - The method has simple chemical process, convenient operation, no pollution and low cost.    DETAILED DESCRIPTION - Phytosterol is extracted from plant oil deodorizer distillate by (A) esterification; (B) filtering, (C) coldly separating, and (D) washing and drying. The step (A) includes calculating theoretical amount of alcohol according to content of free fatty acid in deodorizer distillate, where quality ratio of theoretical amount of alcohol and free fatty acid is 1; mixing and reacting at 50-95 degrees C at refluxing temperature of 0.5-3 hours; and after reacting, adding water, where weight of added water is same as that of actually added alcohol. The amount of actually added alcohol is 1-8 times of theoretical amount. The amount of the solid acid as catalyst is 0.5-3% of actually added alcohol. The step (B) includes separating solid acid and reaction system through filtering, preserving solid and recycling. The step (C) includes after filtering solid acid catalyst via esterified reaction system and coldly separating at 5-35 degrees C for 1-10 hours, separating phytosterol via needle-type, sheet-type or powder-type crystal type, filtering in vacuum or centrifuging to obtain phytosterol crystal. The step (D) includes washing filtered substance using mixed solvent of ethanol and acetone, and drying at 80-100 degrees C to obtain white phytosterol, where volume ratio of ethanol to acetone is 1-10:10-1.