NOVELTY - An ultraviolet absorbent intermediate etocrilene (ETO) is prepared by placing benzophenone and ethyl cyanoacetate in condensation reaction kettle, adding catalyst and water-insoluble solvent, performing reflux reaction for 12-15 hours, and cooling to 50-55 degrees C in which catalyst contains organic amine and organic acids, organic amine is primary amine or sec.-amine, preferably morpholine, piperidine, pyrrolidine, straight-chain aliphatic sec.-amine, or aliphatic sec.-amine in which straight-chain aliphatic sec.-amine is low carbon-containing sec.-amine e.g. 1-8 carbon-containing alkyl amine.    USE - Preparation of ultraviolet absorbent intermediate etocrilene for white crystal (claimed).    ADVANTAGE - White crystal produced from ultraviolet absorbent intermediate etocrilene has high crystal content and low impurity and preparation process is low-cost and environment-friendly and has easy to obtain raw materials, and greatly reduces wastewater generation.    DETAILED DESCRIPTION - An ultraviolet absorbent intermediate etocrilene (ETO) is prepared by placing benzophenone and ethyl cyanoacetate in condensation reaction kettle, adding catalyst and water-insoluble solvent, performing reflux reaction for 12-15 hours, cooling to 50-55 degrees C in which catalyst contains organic amine and organic acids, organic amine is primary amine or sec.-amine, preferably morpholine, piperidine, pyrrolidine, straight-chain aliphatic sec.-amine, or aliphatic sec.-amine in which straight-chain aliphatic sec.-amine is low carbon-containing sec.-amine e.g. 1-8 carbon-contaninig alkyl amine and organic acid is aliphatic acid or aromatic acid, preferably 1-8 carbon-containing aliphatic acid, and amount of ethyl cyanoacetate is 0.2-5 the amount of benzophenone, washing reaction mixture with water, separating to obtain water layer and organic layer, distilling recycling water under normal pressure and recycling, distilling organic layer under normal pressure to obtain solvent, recycling solvent, decompressing ethyl cyanoacetate, distilling and recycling, adding 75-100% ethanol solution to bottom distillate, crystallizing, filtrating to obtain etocrilene with mother liquor, filtering mother liquor, recovering and recycling ethanol under normal pressure, decompressing filtering liquid to obtain benzophenone and etocrilene and recycling.