Abstract:Aluminum content in prepackaged flour products of 14 classes， a total of 80 kinds of samples were analyzed and compared after these sample were digested by closed high-pressure， then measured by ICP-MS method. The results showed that the samples had not exceed the aluminum limits of national food standards， prepackaged flour products have lower aluminum pollution levels in Beijing supermarket； aluminum content in walnut cake pastry was the highest， followed by the caramel treats， burgers and cakes， and cookies（except fer－ mentation biscuits）aluminum content was the lowest， followed by the egg tart classes.