Excessed levels of borax in food can cause a lot of health effects such as nausea, vomiting, diarrhea, and skin irritation. Moreover, borax can affect many body organs including stomach, bowels, liver, kidney, and brain, and may even lead to death. Borax was detected in various types of meat products in previous studies. Objective is to  determine the borax in samples of sausage products sold in Bangkok. Method have Borax contamination in samples of sausage products were determined by using Borax test kit produced by Pharmacy Organization Thailand. The result is from 29 sausage samples which consisted of 13 samples of chicken sausage, 3 samples of pork mixed chicken sausage, 2 samples of meat sausage, 7 samples of mixed meat sausage and 4 samples of pork sausage. Borax was detected in 6 samples of chicken sausage, 1 sample of pork mixed chicken sausage, 1 sample of meat sausage, 4 samples of mixed meat sausage, and 3 samples of pork sausage, in total, borax were detected in  18 samples (62.07%). And conclusion is Borax was detected in sausage products sold for consumers 62.07% of total samples studied.