The invention discloses a method for detecting an allergen almond component in foods by a fluorescent PCR technology, belonging to allergen detecting technologies, in particular a method for detectingan allergen almond component in foods by an exonuclease probe fluorescent PCR technology (TaqMan). Aiming at an allergen almond component Pru du 1.06B DNA sequence a primer and a TaqMan probe are designed, the fluorescent PCR detecting method is established. The method includes the designed primer and a probe of the almond component specificity, and the fluorescent PCR reaction condition matchedwith the primer and the probe. The method has no cross reaction with peanuts, hazelnuts, chestnuts, walnuts, pine nuts, macadamia nuts, and the like and has specificity; and the detecting sensitivitycan reach 5mg/kg. The method can be used for detecting the allergen in the foods and preventing anaphylactic reaction caused by the foods and has practical meanings.