Curry Paste is well known all over the region of Thailand. Curry Paste has specific unique features including color, smell, and taste. Its ingredients contain several fresh that make Curry Paste has high moisture in texture (more 40%) . This is cause the shelf life of curry paste has a short time. The study about the quality and shelf life extension products of curry paste for preserve the safety quality of curry paste in order to the specified level. Extending the shelf life of curry paste wascontrolled by the selection and preparation of materials before processing, the package or packaged curry paste, pH value.Controlling moisture content and water activity (Aw) of the products. This is the lowest point of the water content in the foodthat microbialcan lead to growth.Community product standard decides the value of standardwater activity in curry paste products were 0.85 for control and protectthe deterioration of curry paste that consisted by microbial. Besides, addition salt cause pH value of curry paste were during 4.93- 5.12.While the curry paste of control group has pH value higher 5.12. Curry Paste that added salt was more bright red and yellow than the curry pastethat was not added salt. Adding salt 20 % affect moisture value and aw lower the control group.Adding salt 10 % and 20 % was not affect growth of microbial, yeast and fungus. Heating affects the amount of total phenolic contents (TPC), and colors shown the antioxidant increasedin the curry pasteat temperature 120◦C.Heating the curry paste higher than 60◦C made L levels more increased than the sample thatwas not heating.