Background: Borax was used in a variety of processed food products. Excessive levels of Borax in food can cause a lot of health effects. Processed foods have been become popular due to social factors and lifestyle changes. Objective: To determine the Borax in samples of meatball products sold to consumers. Method: Borax contamination in samples of sausage products were determined by using Borax test kit produced by Pharmacy Organization Thailand. Result: Out of 43 meatball samples, consisting of chicken, fish, meat, mixed, pork and shrimp, Borax was detected in 26 samples, representing 60.47%, the highest percentage of the first 3 samples of 10 fish ball samples, Borax was detected in 7 samples, representing 70%, followed by 75% of the 8 meatball samples, and 75% of the 6 samples found Borax and a total of 16 pork ball samples found borax in 10 samples, representing 62.50%.Conclusion: Borax was detected in meatball products sold to consumers 62.50% of total samples studied.