For the effective utilizing of polyunsaturated lipids in filefish viscera wasted from marine manufactory the conditions of degumming, deacidification, decoloring and deodorization for the processing of refined viscera oil were investigated. In the process of refining degumming with 20$mell$ of 4% oxalic acid per 100$mell$ of crude filefish viscera oil resulted in the lowest residual phosphorus content as 115.8 ppm and optimal condition to neutralize the filefish viscera oil was treating for 30min at 60$^{circ}C$ with 0.5% excess of 4M sodium hydroxide solution. Decoloring was optimized by adding 10% bleaching earth and treating for 20min at 60$^{circ}C$ under vacuum, and deodorizing was done by steam distillation at 180$^{circ}C$ under 4 torr of vacuum.