This study was conducted to assess the effect of phenolic compound extract from longan seed supplement in pork sausages for synthesis additive replacement on shelf life and sausages quality. The phenolic extraction was applied in pork sausages with 6 ratios to replacement chemical reagent 0:100, 20:80, 40:60, 60:40, 80:20 and 100:0 (v/w) respectively. The results shown that phenolic extraction could be maintained pH value and reduce lipid oxidation reaction in term of TBARS of the pork sausages. However, increasing level of phenolic extraction to the product had the resulted to poor color appearance and also lower water holding capacity. Base on this study, itcould be concluded that replacement chemical reagent with phenolic extraction within 20% showed the advantage result than other concentration.