Food-use detergents are used for food, food utensils, containers and packages, which are closely related to our daily life. In order to realize the contents of arsenic, nonylphenol surfactants and fluorescent whitening agents in food-use detergents, 60 samples from retails, supermarkets and manufactories were collected in October 2010 by the local health bureaus. The official methods proclaimed by the Department of Health were used to determine the contents of arsenic, nonylphenol, nonylphenol ethoxylates and fluorescent whitening agents. The results showed that none of nonylphenol, nonylphenol ethoxylates and fluorescent whitening agents was detected in all samples, while the contents of arsenic were all under 0.05 ppm, indicating all samples were in compliance with the regulation of Sanitation Standard for Food-Use Detergents by the Department of Health, Executive Yuan.