The work aims to find suitable packaging materials and test accessories for vegetable oil condiments, obtain the heat sealing pressure range to solve the problem of oil leakage in product packaging in the actual production of vegetable oil condiments industry. Seven kinds of packaging materials including PA15/PE62, PA15/PE65, PA15/PE55, PET/PET aluminized/PE, PET/Al/PE and PET12/PE38, were used to fill oil base materials of 50 g, 150 g and 300 g in the actual production environment of automatic bag-making packer, and 30 kg heavy materials were stored and tested for 90 days. The sealing quality was observed every 15 days. By adding heat seal pressure adjusting accessories, the range of heat seal pressure in actual production could be indirectly indicated, and then the range of heat seal pressure adjusting of different materials could be explored further. After 90 days of pressure storage, the oil leakage rate of three packaging materials ranged from 0% to 17.95%. The oil leakage rate of PA15/PE62 under three specifications of 50 g, 150 g and 300 g was 0, which showed that the material could effectively alleviate the oil leakage under the existing production conditions. The pressure accessories had better effect and the number of adjusting cycles of heat seal adjusting accessories of two coils was 7.4~6.25 and 7.4~5.75 respectively. PA15/PE65 can effectively alleviate the phenomena of broken roots and oil leakage in the heat-seal parts in actual production. The use of the pressure accessories is convenient for manufacturers to find the equilibrium point between the heat-seal pressure and the heat-seal temperature, thus alleviating the oil leakage.